Dirty air and water are harmful.
肮脏的空气和水是有害的。
A number of products have been developed which are permeable to air and water.
已开发出许多可渗水透气的产品。
It may pollute the air and water.
它可能会污染空气和水。
There are laws against littering and against making the air and water dirty.
法律禁止乱扔垃圾，禁止污染空气和水。
It pollutes soil, air and water.
它污染土壤、空气和水。
The air and water have dirtied quickly.
空气和水很快就被污染了。
Air and water are indispensable to life.
空气和水是生命所必需的东西。
人类需要空气和水。
We can't live without air and water.
没有空气和水我们就活不了。
Men can't live without air and water.
人类没有空气和水不能生存。
There are air and water on the Earth.
在地球上有空气和水。
They can't live without air and water.
没有空气和水，他们不能生存。
We couldn't live without air and water.
没有空气和水，我们就不可能生存。
Nothing can live without air and water.
没有空气和水，任何东西都不能生存。
We would not live without air and water.
没有空气和水我们就无法生存。
Air and water pollution is getting worse.
空气和水的污染越来越严重。
Hope is as essential to your life as air and water.
希望就如空气和水，是人生的必需品。
Plant growth needs sunshine, air and water as well.
植物生长需要阳光，需要空气，也同样需要水分。
If there were not air and water, nothing could survive.
没有空气和水，什么都不能存活。
CHAPTER V. AIR AND WATER IN THEIR RELATIONS TO WEATHER.
第5章空气、水分与天气变化。
It is as important as fresh air and water for betterment.
这是同样重要的新鲜空气和水的改善。
Even with air and water, plants still couldn't grow on the moon.
即使有了空气和水，植物也仍然不能在月球上生长。
The absence of air and water makes it impossible to live on the moon.
因为缺乏空气和水，所以(人们)在月球上居住是不可能的。
This dynamic presentation brings the delicate balance of air and water to life.
这种动态演示带来的微妙的平衡对生命的空气和水。
This dynamic presentation brings the delicate balance of air and water to life.
这种动态演示带来的微妙的平衡对生命的空气和水。
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