Dirty air and water are harmful.

肮脏的空气和水是有害的。

They exhale dirty air inside and inhale fresh one.

用特别的方法排除秽气吸入新鲜空气；

A newly refurnished room will have a lot of dirty air.

一个新装修的房间会有很多脏的空气。

People suffer health problems as they are breathing the dirty air.

人们都有健康问题,因为他们呼吸的空气太污浊了.

Cleaning a dirty air filter can save 350 pounds of carbon dioxide a year.

清空肮脏的空气滤清器一年可以省下三百五磅的二氧化碳.

Some people think they have an answer to the troubles of dirty air in large cities.

有些人认为他们有办法解决大城市的空气污染问题.

We've identified a lot of evidence that breathing in dirty air directly causes a breakdown in the integrity of the sinus and nasal air passages in mice.

我们有大量的证据表明，在污浊的空气中呼吸会直接导致小鼠鼻窦和鼻气道的完整性崩溃。

The challenge now, he says, is to identify which pollutants are harming the nervous systems of Ana and others who live in areas with particularly dirty air.

他说，当前所面临的挑战是，要鉴定出哪些污染物在危害安娜和其他居住在空气污浊区的人们的神经系统。