In today's world, almost everyone knows air pollution is harmful to people's health.
现在，几乎所有人都知道空气污染对人类的健康有害。
However, not all people know noise is also a kind of pollution and is harmful to humans' health.
但是，并不是所有人都知道噪音也是一种污染，而且对人体有害。
People who work and live in noisy conditions often go deaf.
在嘈杂环境下工作和生活的人会失聪。
For example, many of the workers who print newspapers and books lose their hearing.
比如，很多印刷报纸和书籍的人都失去了听觉。
Quite a few people living near airports also have hearing loss.
住在机场附近的很多人也失去了听觉。
Recently, it is reported that many teenagers in America can hear no better than 65-year-old people do, because these young people always listen to loud pop music.
最近，一篇报道称美国很多年轻人的听力跟65岁的老人一样，因为这些年轻人经常听音量很大的流行音乐。
Making a loud noise in public is also a kind of pollution.
在公共场合制造噪音也是一种污染。
It not only disturbs others but also does great harm to people's hearing.
这不仅会打扰别人，而且会对人们的听力造成损害。
Cars and machines also produce too much noise.
汽车和机器也会产生很多噪音。
Such pollution makes people feel uncomfortable and unpleasant, and it can even cause them to become sick or deaf.
这种污染会让人觉得很不舒服，心情不好，甚至会让他们生病或失聪。
Nowadays many countries are trying to solve all sorts of environmental problems, including noise pollution.
现在很多国家都在设法解决各种各样的环境问题，包括噪音污染。
