阳光照耀着空气中的小灰尘。
他认为树木需要水和空气中的气体来生长。
He decided that trees use water, and a gas from the air, to grow.
当阳光落在空气中的水滴上时，它们就形成了。
她站在讲台上说：“请闻闻它在空气中的味道，然后……”
She stood on the platform and said, "Please smell it in the air, and..."
它们与空气中的冰混合，然后以雪的形式落在地上。
They mix with ice in the air and fall to the ground as snow.
如果将来每个人都开这样的车，空气中的污染会更少。
If everyone drives such a car in the future, there will be less pollution in the air.
科学家做了一个测试，发现树木可以生长，是因为水和空气中的气体。
The scientist did a test and found that trees can grow because of water and a gas from the air.
由于植物会将周围空气中的二氧化碳耗尽，因此需要空气流动将更多的二氧化碳带到其表面！
Since a plant uses it up in the air around, the plant needs moving air to bring more CO2 close to its surface!
看看这些工厂排放到空气中的污染物。
Look at all the pollutants going into the air from those factories.
随着树木的生长，它在树干上增加了一层吸收空气中的化学元素而生成的膜。
As the tree grows, it adds a layer to its trunk taking up chemical elements from the air.
通过查找某一年年轮中的元素，科学家可以知道那一年空气中的元素是什么。
By looking up the elements in the rings for a given year, scientists can tell what elements were in the air that year.
在离水不到一毫米的地方，空气的温度接近于地表水的温度，空气中的水蒸气几乎饱和了。
Within about a millimeter of the water, air temperature is close to that of the surface water, and the air is nearly saturated with water vapor.
与此同时，空气中的二氧化碳含量正迅速接近政府间气候变化专门委员会（IPCC）提出的上限。
In the meantime, the amount of CO2 in the air is rapidly approaching the limits proposed by the Intergovernmental Panel on Climate Change (IPCC).
随着气温升高，空气中的水蒸气增多，这样的风暴会吸收更多的湿气，因此雨雪会比以前的风暴来得更猛烈。
With temperatures rising and more water vapor in the air, such storms can pull in more moisture and thus rain or snow more heavily than storms of old.
一个世纪前，亨利·卡文迪什注意到当空气中的氧气和氮气被除去，还有其他剩余气体存在，但人们还没有认识到它们的重要性。
A century earlier, Henry Cavendish had noted the existence of a residual gas when oxygen and nitrogen are removed from air, but its importance had not been realized.
云是悬在空气中的水滴形成的。
吸收工作场所空气中的四溴化碳。
制冷剂变为蒸汽，吸收空气中的热量。
A refrigerant vaporises, absorbing heat from the air to be cooled.
空气中的铅来源很广，包括熔炼厂和钢铁厂。
Lead in the air comes from myriad sources, including smelters as well as iron and steel foundries.
日本则在海上养殖藻类，以吸收空气中的二氧化碳。
In Japan, algae is farmed at sea where it absorbs carbon from the air.
浮游植物通过光合作用消耗空气中的二氧化碳产生氧气。
Photosynthesis by phytoplankton removes carbon dioxide from the air and produces oxygen.
8月8日当我们接近海滩时我突然闻到了空气中的盐味。
Then, as we approached the coast on Sunday, August 8, we suddenly smelled the salt in the air.
鉴于在空气中的稀释，室外的氡水平通常很低。
Due to dilution in the air, outdoor radon levels are usually very low.
所有汽车排放到空气中的煤烟更是几乎成倍增加。
And the amount of soot added to the atmosphere as a result of all our cars nearly doubles.
他们认为，空气中的臭氧阻止蜜蜂和其他授粉媒介闻到鲜花。
They think ozone in the air is keeping bees and other pollinators from smelling the flowers.
这一点很重要，因为空调的核心工作就是去除空气中的热量。
That's important because an air conditioner works by essentially removing heat from the air.
过滤器是如何除去空气中的有毒化学品或致命细菌呢？
How does the filter remove poisonous chemicals and deadly bacteria from the air?
过滤器是如何除去空气中的有毒化学品或致命细菌呢？
How does the filter remove poisonous chemicals and deadly bacteria from the air?
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