探索自然 | 本集 精彩教學影片(講解老師:Chris & Antony 老師)
Some people often mistake contrails for chemical trails, or chemtrails. People have even claimed that the trails left behind by planes contain chemicals purposely released into the atmosphere. Some believe that governments are spraying chemicals for various purposes, such as to change the weather or to control the population with drugs. However, these conspiracy theories lack proof. After looking into these claims, scientists have stepped forward to dismiss them.
Contrary to what some people believe, scientists have explained that contrails are not directly harmful to humans. Contrails that last for a long time, though, might become an increasingly serious problem for the environment. In particularly ideal conditions, some contrails can spread and form cirrus clouds that last for hours. These artificial cirrus clouds can cool the planet by blocking radiation from the Sun and reflecting it back into space. However, they also trap heat from the Earth’s surface and stop it from escaping into space. This effect is a major concern for scientists as contrails can play a part in global warming.
I wouldn’t demand proof of loyalty from a friend.
我不會向朋友要求忠誠的證明。
The judge required proof of what the defendant said.
法官要求被告提出說辭的證據。
Most banks’ safes are proof against fire.
大部份銀行的保險箱都是防火的。
Most banks’ safes are fireproof.
大部份銀行的保險箱都是防火的。
The mirror reflects sunlight.
鏡子會反射陽光。
The polls have reflected that welfare is the top issue with voters.
這些民調反應出福利制度才是選民關注的首要議題。
We took a moment to reflect on what we were about to do.
我們花了片刻時間思考我們要怎麼做。
People's actions often reflect their inner thoughts.
人們的行動往往反映出他們內心的想法。
There is an ongoing crisis because that infectious disease is spreading quickly.
由於該傳染病蔓延得很快,因此危機一直存在。
The lawyer refused to comment on the ongoing case.
這名律師拒絕就該審理中的案件發表評論。
Ryan is tired of the ongoing argument with his neighbor about the fence. 萊恩受夠了跟鄰居為了圍籬持續發生爭執。
Because of his long hair, I mistook the boy for a girl.
因為那男生留長髮,所以我把他誤認成女生。
Samʼs friends stepped forward to support him when he needed help.
山姆需要幫助時,他的朋友挺身而出支持他。