Whatever happened to acid rain? - Joseph Goffman

2,536,302 views ใƒป 2021-04-13

TED-Ed


์•„๋ž˜ ์˜๋ฌธ์ž๋ง‰์„ ๋”๋ธ”ํด๋ฆญํ•˜์‹œ๋ฉด ์˜์ƒ์ด ์žฌ์ƒ๋ฉ๋‹ˆ๋‹ค.

๋ฒˆ์—ญ: Hyeona Seo ๊ฒ€ํ† : DK Kim
00:07
In 1963, scientists studying Hubbard Brook Experimental Forest in New Hampshire
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1963๋…„ ๋‰ด ํ–„ํ”„์…”์˜ ํ—ˆ๋ฐ”๋“œ ๋ธŒ๋ฃฉ ์‹คํ—˜๋ฆผ์„ ์—ฐ๊ตฌํ•˜๋˜ ํŒ€์€
00:13
made a shocking discovery.
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์ถฉ๊ฒฉ์ ์ธ ๋ฐœ๊ฒฌ์„ ํ•ฉ๋‹ˆ๋‹ค.
00:15
Their most recent rainfall samples were nearly 100 times more acidic than usual.
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๊ฐ€์žฅ ์ตœ๊ทผ์— ๋‚ด๋ฆฐ ๋น„ ํ‘œ๋ณธ ์‚ฐ์„ฑ๋„๊ฐ€ ํ‰์†Œ๋ณด๋‹ค 100๋ฐฐ๋‚˜ ๊ฐ•ํ–ˆ๊ฑฐ๋“ ์š”.
00:21
At these levels, additional downpours of acid rain
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์ด ์ •๋„์˜ ์‚ฐ์„ฑ๋น„๊ฐ€ ๋” ๋‚ด๋ฆฐ๋‹ค๋ฉด
00:25
would destroy the regionโ€™s marine and arboreal ecosystems
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์ˆ˜์‹ญ ๋…„ ๋‚ด์— ์ง€์—ญ์˜ ์ˆ˜์ค‘ ์ƒํƒœ๊ณ„์™€ ์ˆ˜๋ชฉ ์ƒํƒœ๊ณ„๋ฅผ ํŒŒ๊ดดํ•  ์ˆ˜ ์žˆ์—ˆ์–ด์š”.
00:29
in a matter of decades.
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00:30
Urgently sharing their findings with fellow researchers,
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๋™๋ฃŒ ์—ฐ๊ตฌ์ž๋“ค๊ณผ ๊ธ‰ํ•˜๊ฒŒ ๋ฐœ๊ฒฌ์„ ๊ณต์œ ํ•˜๋ฉด์„œ
00:34
they were determined to answer two questions:
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๊ณผํ•™์ž๋“ค์€ ๋‘ ๊ฐ€์ง€ ์งˆ๋ฌธ์„ ํ–ˆ์Šต๋‹ˆ๋‹ค.
00:37
what was causing this deadly rainfall? And what could be done to stop it?
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์ด ์น˜๋ช…์ ์ธ ๋น„์˜ ์›์ธ์€ ๋ฌด์—‡์ผ๊นŒ?
์ด๊ฑธ ๋ฉˆ์ถ”๋ ค๋ฉด ์–ด๋–ป๊ฒŒ ํ•ด์•ผ ํ• ๊นŒ?
00:43
Rain is never just composed of water.
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๋น„๋Š” ์ ˆ๋Œ€๋กœ ๋‹จ์ˆœํ•œ ๋ฌผ์ด ์•„๋‹™๋‹ˆ๋‹ค.
00:46
Chemicals and particulates in the atmosphere can be found in every drop,
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๋น—๋ฐฉ์šธ์—๋Š” ๋Œ€๊ธฐ์˜ ํ™”ํ•™๋ฌผ์งˆ๊ณผ ๋ฏธ๋ฆฝ์ž๊ฐ€ ํฌํ•จ๋˜์–ด ์žˆ๊ณ 
00:51
and some compoundsโ€” like carbon dioxideโ€”
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์ด์‚ฐํ™”ํƒ„์†Œ ๊ฐ™์€ ํ™”ํ•ฉ๋ฌผ์€
00:54
make even regular rainfall slightly acidic.
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ํ‰๋ฒ”ํ•œ ๋น„๋„ ์•ฝ์‚ฐ์„ฑ์„ ๋„๊ฒŒ ํ•ฉ๋‹ˆ๋‹ค.
00:57
But this pales in comparison to the powerful acids produced
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ํ•˜์ง€๋งŒ ๋ฌผ์ด ์งˆ์†Œ ์‚ฐํ™”๋ฌผ ๋˜๋Š” ์ด์‚ฐํ™” ํ™ฉ๊ณผ ๋งŒ๋‚ฌ์„ ๋•Œ ๋งŒ๋“ค์–ด์ง€๋Š”
01:01
when water interacts with oxides of nitrogen or sulfur dioxide.
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๊ฐ•๋ ฅํ•œ ์‚ฐ์„ฑ ์•ž์—์„œ๋Š” ์•„๋ฌด๊ฒƒ๋„ ์•„๋‹ˆ์ง€์š”.
01:07
On the pH scale which measures acidity,
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์‚ฐ๋„๋ฅผ ์ธก์ •ํ•˜๋Š” pH ์ฒ™๋„์—์„œ
01:10
each whole number is 10 times more acidic than the one above it.
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๊ฐ ์ •์ˆ˜๋Š” ๋ฐ”๋กœ ์œ„์˜ ์ˆซ์ž๋ณด๋‹ค 10๋ฐฐ ๊ฐ•ํ•œ ์‚ฐ๋„๋ฅผ ๋‚˜ํƒ€๋ƒ…๋‹ˆ๋‹ค.
01:15
And where normal rain has a pH of roughly 5.4,
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ํ‰๋ฒ”ํ•œ ๋น„๊ฐ€ 5.4์˜ pH๋ฅผ ๋ˆ๋‹ค๋ฉด
01:19
rain thatโ€™s interacted with these gases can rank as low as 3.7.
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์ด๋Ÿฌํ•œ ๊ธฐ์ฒด๋“ค๊ณผ ๋ฐ˜์‘ํ•œ ๋น„๋Š” ์‚ฐ๋„๊ฐ€ 3.7๊นŒ์ง€ ๋†’์•„์งˆ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
01:24
Oxides of nitrogen and sulfur dioxide can appear naturally
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์งˆ์†Œ ์‚ฐํ™”๋ฌผ๊ณผ ์ด์‚ฐํ™” ํ™ฉ์€
ํ™”์‚ฐ ํญ๋ฐœ์˜ ๋ถ€์‚ฐ๋ฌผ ๋˜๋Š” ๋ฒˆ๊ฐœ๋กœ ์ธํ•ด
01:29
as a short-lived byproduct of volcanic eruptions or lightning strikes.
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์งง์€ ๊ธฐ๊ฐ„ ๋™์•ˆ ์ž์—ฐ์ ์œผ๋กœ ๋‚˜ํƒ€๋‚  ์ˆ˜ ์žˆ์–ด์š”.
01:34
But power plants, refineries, and vehicles that use fossil fuels
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ํ•˜์ง€๋งŒ ํ™”์„ ์—ฐ๋ฃŒ๋ฅผ ์ด์šฉํ•˜๋Š” ๋ฐœ์ „์†Œ, ์ •์œ  ๊ณต์žฅ, ์ฐจ๋Ÿ‰๋“ค์€
01:38
consistently pump large quantities into the air.
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๋งŽ์€ ์–‘์ด ์ง€์†์ ์œผ๋กœ ๊ณต๊ธฐ ์ค‘์œผ๋กœ ๋ฐฐ์ถœ๋ฉ๋‹ˆ๋‹ค.
01:43
These dangerous gases travel with the wind
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์ด ์œ„ํ—˜ํ•œ ๊ธฐ์ฒด๋“ค์€ ๋ฐ”๋žŒ์„ ํƒ€๊ณ  ๋‚ ์•„๊ฐ€๊ณ 
01:46
spreading hundreds of kilometers from the pollutionโ€™s source.
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๋ฐœ์›์ง€์—์„œ ์ˆ˜๋ฐฑ ํ‚ฌ๋กœ๋ฏธํ„ฐ ๋–จ์–ด์ง„ ๊ณณ๊นŒ์ง€ ํผ์ ธ๋‚˜๊ฐ‘๋‹ˆ๋‹ค.
01:49
Acting like roaming clouds of destruction,
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๋– ๋‹ค๋‹ˆ๋Š” ํŒŒ๊ดด์˜ ๊ตฌ๋ฆ„์ฒ˜๋Ÿผ
01:52
their presence dramatically increases the acidity of local precipitation,
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์ง€์—ญ์ ์œผ๋กœ ๋น„์˜ ์‚ฐ๋„๋ฅผ ์—„์ฒญ๋‚˜๊ฒŒ ๋†’์ด๊ณ 
01:57
creating acid rain, acid snow, and acid fog.
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์‚ฐ์„ฑ ๋น„์™€ ์‚ฐ์„ฑ ๋ˆˆ, ์‚ฐ์„ฑ ์•ˆ๊ฐœ๋ฅผ ๋งŒ๋“ญ๋‹ˆ๋‹ค.
02:02
These all acidify lakes and streams, kill crops and forests,
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์‚ฐ์„ฑํ™”๋œ ํ˜ธ์ˆ˜์™€ ๊ฐœ์šธ์€ ๋†์ž‘๋ฌผ๊ณผ ์ˆฒ์„ ํŒŒ๊ดด์‹œํ‚ค๊ณ 
02:07
and damage soil to inhibit future growth.
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ํ† ์–‘์€ ์˜ค์—ผ๋˜์–ด ์ž‘๋ฌผ์ด ์ž๋ผ์ง€ ๋ชปํ•˜๊ฒŒ ๋ฉ๋‹ˆ๋‹ค.
02:10
Over time, acid rain can even corrode human structures made of stone or metal.
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์‹œ๊ฐ„์ด ์ง€๋‚˜๋ฉฐ ์‚ฐ์„ฑ๋น„๋Š” ๋Œ์ด๋‚˜ ๊ธˆ์†์œผ๋กœ ๋งŒ๋“ค์–ด์ง„ ๊ฑด์ถ•๋ฌผ๊นŒ์ง€ ๋ถ€์‹์‹œํ‚ต๋‹ˆ๋‹ค.
02:17
By the 1970s, scientists in North America and Europe classified acid rain
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1970๋…„๋Œ€์— ๋ถ์•„๋ฉ”๋ฆฌ์นด์™€ ์œ ๋Ÿฝ์˜ ๊ณผํ•™์ž๋“ค์€
์‚ฐ์„ฑ๋น„๋ฅผ ์ฃผ์š” ํ™˜๊ฒฝ ์œ„ํ˜‘ ์š”์†Œ๋กœ ๋ถ„๋ฅ˜ํ–ˆ์–ด์š”.
02:23
as a major environmental threat.
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02:25
But despite clear evidence tying the problem to air pollution,
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๋Œ€๊ธฐ ์˜ค์—ผ๊ณผ ๊ด€๋ จ๋œ ๋šœ๋ ทํ•œ ์ฆ๊ฑฐ์—๋„ ๋ถˆ๊ตฌํ•˜๊ณ 
02:29
companies denied responsibility and cast doubt on the research.
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ํšŒ์‚ฌ๋“ค์€ ์ฑ…์ž„์„ ํšŒํ”ผํ•˜๊ณ  ์—ฐ๊ตฌ์— ์˜ํ˜น์„ ์ œ๊ธฐํ–ˆ์Šต๋‹ˆ๋‹ค.
02:33
In the United States, corporations lobbied against regulating pollution,
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๋ฏธ๊ตญ์—์„œ ํšŒ์‚ฌ๋“ค์€ ์˜ค์—ผ์„ ๊ทœ์ œํ•˜๋Š” ๋ฒ•์— ๋ฐ˜๋Œ€ํ•˜๊ธฐ ์œ„ํ•ด ๋กœ๋น„ํ–ˆ๊ณ 
02:38
and convinced politicians that such policies
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์ •์น˜๊ฐ€๋“ค์—๊ฒŒ ๊ทธ๋Ÿฐ ์ •์ฑ…๋“ค์€ ์—๋„ˆ์ง€ ๋น„์šฉ์„ ๋†’์ด๊ณ 
02:41
would raise energy costs and threaten jobs.
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์‹ค์—…๋ฅ ์„ ๋†’์ผ ๊ฑฐ๋ผ๊ณ  ํ˜‘๋ฐ•ํ–ˆ์–ด์š”.
02:44
These obstacles led the government to delay changes,
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์ด๋Ÿฌํ•œ ๋ฐ˜๋Œ€๋Š” ์ •๋ถ€์˜ ๋ณ€ํ™”์™€ ๋ฌธ์ œ์— ๋Œ€ํ•œ ์ถ”๊ฐ€ ์—ฐ๊ตฌ๋ฅผ ๋Šฆ์ถ”์—ˆ์ง€์š”.
02:47
and mandate further research into the issue.
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02:50
But after a decade of mounting concern, Congress finally took action.
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ํ•˜์ง€๋งŒ ์‹ญ ๋…„ ๋™์•ˆ ์šฐ๋ ค๊ฐ€ ์Œ“์ด๋ฉด์„œ ์˜ํšŒ๋Š” ๊ฒฐ๊ตญ ํ–‰๋™์„ ์ทจํ•ฉ๋‹ˆ๋‹ค.
02:56
Since the bulk of sulfur dioxide emissions came from power plants,
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์ด์‚ฐํ™” ํ™ฉ ๋ฐฉ์ถœ๋Ÿ‰์˜ ๋Œ€๋ถ€๋ถ„์ด ๋ฐœ์ „์†Œ์—์„œ ๋‚˜์˜ค๊ธฐ ๋•Œ๋ฌธ์—
03:00
the government set a limit on the total amount of it
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์ •๋ถ€๋Š” ๋ฐœ์ „ ๋ถ„์•ผ์—์„œ ๋งค๋…„ ๋ฐฐ์ถœํ•  ์ˆ˜ ์žˆ๋Š”
03:03
the electric power sector could emit each year.
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์ด ๋ฐฉ์ถœ๋Ÿ‰์˜ ์ตœ๋Œ€์น˜๋ฅผ ์ •ํ–ˆ์Šต๋‹ˆ๋‹ค.
03:06
Then, they divided the permitted emissions into a fixed number of โ€œallowancesโ€
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๊ทธ๋ฆฌ๊ณ  ํ—ˆ๊ฐ€๋œ ๋ฐฉ์ถœ๋Ÿ‰์„ ๊ณ ์ •๋œ ์ˆ˜์น˜์ธ ํ—ˆ์šฉ๋Ÿ‰์œผ๋กœ ๋‚˜๋ˆ„๊ณ 
03:12
distributed to each power plant.
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๊ฐ๊ฐ์˜ ๋ฐœ์ „์†Œ์— ๋ฐฐ๋‹นํ–ˆ์ง€์š”.
03:14
A plant could then choose to emit as much sulfur dioxide as they were allowed,
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๋ฐœ์ „์†Œ๋Š” ํ—ˆ์šฉ๋œ ๋งŒํผ์˜ ์ด์‚ฐํ™” ํ™ฉ์„ ๋ฐฉ์ถœํ•˜๊ฑฐ๋‚˜
03:19
or reduce their emissions and sell their unused allowances to other power plants.
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๋ฐฉ์ถœ๋Ÿ‰์„ ์ค„์ด๊ณ  ๋‚จ์€ ๋งŒํผ์˜ ํ—ˆ์šฉ๋Ÿ‰์„ ๋‹ค๋ฅธ ๋ฐœ์ „์†Œ์— ํŒ” ์ˆ˜ ์žˆ์—ˆ์–ด์š”.
03:25
This system, known as โ€œcap and trade,โ€
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์ด ์ œ๋„๋Š” โ€˜ํƒ„์†Œ๋ฐฐ์ถœ๊ถŒ ๊ฑฐ๋ž˜์ œโ€™๋ผ ํ•˜๋ฉฐ
03:29
offered power plants the economic flexibility to keep costs low
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์˜ค์—ผ์„ ๊ฐ•๋ ฅํ•˜๊ฒŒ ์ œํ•œํ•˜๋ฉด์„œ๋„
๋ฐœ์ „์†Œ๊ฐ€ ๋น„์šฉ์„ ์ค„์ผ ์ˆ˜ ์žˆ๋Š” ๊ฒฝ์ œ์  ์œตํ†ต์„ฑ์„ ์ค€ ๊ฒƒ์ด์ง€์š”.
03:33
while strictly limiting pollution.
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03:35
Many critics called these allowances licenses to pollute,
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๋งŽ์€ ๋น„ํ‰๊ฐ€๋“ค์€ ์ด ํ• ๋‹น์ œ๋ฅผ ์˜ค์—ผ ํ—ˆ๊ฐ€๋ผ๊ณ  ๋ถˆ๋ €๊ณ 
03:39
or said the government was selling clean air.
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์ •๋ถ€๊ฐ€ ๊นจ๋—ํ•œ ๊ณต๊ธฐ๋ฅผ ํŒŒ๋Š” ๊ฒƒ์ด๋ผ๊ณ ๋„ ํ–ˆ์–ด์š”.
03:42
But since the cap was set to lower five years into the program,
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ํ•˜์ง€๋งŒ ์ œ๋„ ์‹œํ–‰ ํ›„ 5๋…„์ด ์ง€๋‚˜๋ฉด ํ•œ๋„๊ฐ€ ์ค„์–ด๋“ค๋„๋ก ๊ณ„ํš๋˜์—ˆ๊ธฐ ๋•Œ๋ฌธ์—
03:46
it forced every utility company to reduce emissions in the long term.
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์žฅ๊ธฐ์ ์œผ๋กœ ๋ณด์•˜์„ ๋•Œ๋Š” ๋ชจ๋“  ๋ฐœ์ „์†Œ๊ฐ€ ํƒ„์†Œ ๋ฐฐ์ถœ๋Ÿ‰์„ ์ค„์ด๋„๋ก ํ–ˆ์ง€์š”.
03:51
Some plants added desulfurizing scrubbers to their smokestacks,
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์–ด๋–ค ๋ฐœ์ „์†Œ๋“ค์€ ๊ตด๋š์— ์ œํ™ฉ ์ง‘์ง„๊ธฐ๋ฅผ ์„ค์น˜ํ•˜๊ฑฐ๋‚˜
03:55
or switched to low-sulfur coal and natural gas.
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์—ฐ๋ฃŒ๋ฅผ ์ €์œ ํ™ฉ ์„ํƒ„๊ณผ ์ฒœ์—ฐ ๊ฐ€์Šค๋กœ ๋ฐ”๊พธ์—ˆ์Šต๋‹ˆ๋‹ค.
03:59
Oxides of nitrogen emissions were also reduced
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์ƒ๋Œ€์ ์œผ๋กœ ๋‚ฎ์€ ๋น„์šฉ์˜ ๊ธฐ์ˆ ๋กœ ์งˆ์†Œ ์‚ฐํ™”๋ฌผ ๋˜ํ•œ ์ค„์ผ ์ˆ˜ ์žˆ์—ˆ์–ด์š”.
04:02
with relatively low-cost technologies.
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04:05
These advances allowed the power sector to grow
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์ด๋Ÿฌํ•œ ๋…ธ๋ ฅ์„ ํ†ตํ•ด ๊ฑฐ๋ž˜์ œ๋กœ ์˜ค์—ผ์„ ์ค„์ด๋ฉด์„œ๋„
04:08
while the cap kept pollution under control.
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๋ฐœ์ „ ๋ถ„์•ผ๋Š” ์„ฑ์žฅํ•  ์ˆ˜ ์žˆ์—ˆ์–ด์š”.
04:11
By 1985, Canada and the European Union adopted their own solutions,
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1985๋…„์— ์บ๋‚˜๋‹ค์™€ ์œ ๋Ÿฝ ์—ฐํ•ฉ์€ ์ž์‹ ๋“ค์˜ ํ•ด๊ฒฐ์ฑ…์„ ์ฑ„ํƒํ–ˆ๊ณ 
04:16
and international treaties began circulating
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์ „ ์„ธ๊ณ„์ ์œผ๋กœ ๋Œ€๊ธฐ ์˜ค์—ผ์„ ์ค„์ด๊ธฐ ์œ„ํ•œ
04:19
to reduce air pollution worldwide.
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๊ตญ์ œ ์กฐ์•ฝ๋“ค์ด ํผ์ ธ๋‚˜๊ฐ”์Šต๋‹ˆ๋‹ค.
04:23
Today, this science-driven economic policy has largely eliminated acid rain
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์˜ค๋Š˜๋‚ , ๊ณผํ•™์„ ํ™œ์šฉํ•œ ์ด ๊ฒฝ์ œ ์ •์ฑ…์„ ํ†ตํ•ด
๋ฏธ๊ตญ๊ณผ ์บ๋‚˜๋‹ค์˜ ์‚ฐ์„ฑ๋น„๊ฐ€ ๋งŽ์ด ์ค„์–ด๋“ค์—ˆ์–ด์š”.
04:28
across the United States and Canada.
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04:30
And while many ecosystems still need time to recover,
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์—ฌ์ „ํžˆ ๋งŽ์€ ์ƒํƒœ๊ณ„๊ฐ€ ํšŒ๋ณตํ•  ์‹œ๊ฐ„์ด ํ•„์š”ํ•˜์ง€๋งŒ
04:33
scientists have sped up the restoration of other areas
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๊ณผํ•™์ž๋“ค์€ ์‚ฐ์„ฑ๋น„๋กœ ๋ฉธ์ข…๋œ ํ•„์ˆ˜ ์ƒ๋ฌผ์ข…๋“ค์„ ๋‹ค์‹œ ๋“ค์—ฌ์˜ด์œผ๋กœ์จ
04:37
by reintroducing essential organisms killed off by acid rain.
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์ง€์—ญ์˜ ํšŒ๋ณต์„ ๋ถ๋‹์•˜์Šต๋‹ˆ๋‹ค.
04:42
Some countries, like Russia, India, and China
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๋Ÿฌ์‹œ์•„, ์ธ๋„, ์ค‘๊ตญ ๊ฐ™์€ ๋ช‡๋ช‡ ๋‚˜๋ผ๋“ค์€
04:45
still rely heavily on high-sulfur coal
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์—ฌ์ „ํžˆ ๊ณ ์œ ํ™ฉ ์„ํƒ„์„ ๋งŽ์ด ์ด์šฉํ•˜๊ณ  ์žˆ๊ณ 
04:48
and continue to struggle with the environmental consequences.
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์ด๋กœ ์ธํ•œ ํ™˜๊ฒฝ ์˜ํ–ฅ๊ณผ ํž˜๋“ค๊ฒŒ ์‹ธ์šฐ๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค.
04:52
However, acid rainโ€™s relatively quick journey from major threat to minor issue
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ํฐ ์œ„ํ˜‘์—์„œ ๊ฐ€๋ฒผ์šด ๋ฌธ์ œ๋กœ ๋น„๊ต์  ๋น ๋ฅด๊ฒŒ ๋ฐ”๋€ ์‚ฐ์„ฑ๋น„ ๋ฌธ์ œ๋Š”
04:57
is rightly celebrated as a victory for policies that protect the environment.
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ํ™˜๊ฒฝ ๋ณดํ˜ธ ์ •์ฑ…์˜ ์Šน๋ฆฌ๋กœ ์—ฌ๊ฒจ์ง‘๋‹ˆ๋‹ค.
05:02
Cap and trade canโ€™t solve every environmental problem.
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ํƒ„์†Œ๋ฐฐ์ถœ๊ถŒ ๊ฑฐ๋ž˜์ œ๋กœ ๋ชจ๋“  ํ™˜๊ฒฝ ๋ฌธ์ œ๋ฅผ ํ•ด๊ฒฐํ•  ์ˆ˜ ์žˆ๋Š” ๊ฒƒ์€ ์•„๋‹ˆ์—์š”.
05:05
But by using scientific consensus to guide policy,
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ํ•˜์ง€๋งŒ ์ •์ฑ…์„ ์ •ํ•  ๋•Œ ๊ณผํ•™ ์ง€์‹์„ ์ฐธ๊ณ ํ•˜๊ณ 
05:09
adopting efficient technology,
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ํšจ์œจ์ ์ธ ๊ธฐ์ˆ ์„ ์ ์šฉํ•˜๋ฉฐ
05:11
and being unafraid to impose reasonable costs for pollution,
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์˜ค์—ผ์— ํ•ฉ๋‹นํ•œ ๋น„์šฉ์„ ๋ถ€๊ณผํ•˜๋Š” ๊ฒƒ์„ ๋‘๋ ค์›Œํ•˜์ง€ ์•Š๋Š”๋‹ค๋ฉด
05:15
countries can stop a growing storm of destruction before itโ€™s too late.
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๋„ˆ๋ฌด ๋Šฆ๊ธฐ ์ „์— ํŒŒ๊ดด์˜ ํญํ’์„ ๋ง‰์„ ์ˆ˜ ์žˆ์„ ๊ฒ๋‹ˆ๋‹ค.
์ด ์›น์‚ฌ์ดํŠธ ์ •๋ณด

์ด ์‚ฌ์ดํŠธ๋Š” ์˜์–ด ํ•™์Šต์— ์œ ์šฉํ•œ YouTube ๋™์˜์ƒ์„ ์†Œ๊ฐœํ•ฉ๋‹ˆ๋‹ค. ์ „ ์„ธ๊ณ„ ์ตœ๊ณ ์˜ ์„ ์ƒ๋‹˜๋“ค์ด ๊ฐ€๋ฅด์น˜๋Š” ์˜์–ด ์ˆ˜์—…์„ ๋ณด๊ฒŒ ๋  ๊ฒƒ์ž…๋‹ˆ๋‹ค. ๊ฐ ๋™์˜์ƒ ํŽ˜์ด์ง€์— ํ‘œ์‹œ๋˜๋Š” ์˜์–ด ์ž๋ง‰์„ ๋”๋ธ” ํด๋ฆญํ•˜๋ฉด ๊ทธ๊ณณ์—์„œ ๋™์˜์ƒ์ด ์žฌ์ƒ๋ฉ๋‹ˆ๋‹ค. ๋น„๋””์˜ค ์žฌ์ƒ์— ๋งž์ถฐ ์ž๋ง‰์ด ์Šคํฌ๋กค๋ฉ๋‹ˆ๋‹ค. ์˜๊ฒฌ์ด๋‚˜ ์š”์ฒญ์ด ์žˆ๋Š” ๊ฒฝ์šฐ ์ด ๋ฌธ์˜ ์–‘์‹์„ ์‚ฌ์šฉํ•˜์—ฌ ๋ฌธ์˜ํ•˜์‹ญ์‹œ์˜ค.

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