首先，它们使我们呼吸的空气更清新。
氧气是我们呼吸的空气的一部分。
我们利用植物获得食物、布料、住所，甚至是我们呼吸的空气。
We use plants for food, cloth, shelter (住处) , and even the air we breathe (呼吸) .
由于氮占我们呼吸的空气的五分之四，他们对提高火星的温度持惊人的乐观态度，相信这可以在一百年内完成。
Since nitrogen is four fifths of the air we breathe, they are surprisingly optimistic about raising the temperature on Mars and believe it could be done in hundred years.
书籍价廉物美，不啻我们呼吸的空气。
They are to be had very cheap and good. We breathe but the air of books.
我们呼吸的空气和我们喝的水不像以前一样干净。
The air we take in and the water we drink are not as fresh and clean as they used to be.
我们呼吸的空气是珍贵的，越是远离地球表面越是稀薄。
The air you breathe is precious, and the farther from Earth's surface you go, the less there is.
我们喝的水，我们吃的食物，我们呼吸的空气，都被污染。
The water we drink, the food we eat, the very air that we breathe, are threatened with pollution.
空气污染并不仅仅污染了我们呼吸的空气，也污染了海洋。
Air pollution doesn't just pollute the air we breathe; it fouls the oceans as well.
甲醛在我们呼吸的空气中自然存在，甚至是我们人体代谢的一部分。
It occurs naturally in the air we breathe and is even part of the human metabolism.
听起来挺俗气的，但是嘿，只要它有利于我们呼吸的空气不就行了吗？
This was extremely cheesy, but hey, as long as it benefits the air we breathe, right?
与我们同时代的伟人显得比较普通，因为他们也呼吸我们呼吸的空气。
Those who are great and live among us seem more normal because they're breathing the same air that we are.
必须注意的是：我们呼吸的空气已经被工厂和交通工具所释放的废气严重污染了。
It has to be noticed that the air we breathe is already seriously polluted by the exhaust factories and vehicles give off.
我们呼吸的空气不按体积来卖，从山中小溪涌流出清澈的水源也是供我们免费来饮的。
The air we breathe is not sold by the cubic foot. The water which flows crystal clear from the mountain stream is free for the taking.
骑自行车，跳巴士或地铁，都有助于减少污染我们呼吸的空气，因为它意味着离开汽车在家里。
Riding a bike, hopping a bus or taking the subway all help reduce pollution in the air we breathe, since it means leaving a car at home.
最后，科学家们想弄明白我们呼吸的空气分子到底经历了什么变化，借此找到健康防护的新方向。
In the end, scientists want to know exactly what's going on with the molecules that we breathe - and they hope this information will help us find new ways to protect our health.
天气、气候和我们呼吸的空气，由于今天这个世界气象日的题材，提醒我们他们之间的密切的关系。
Weather, climate and the air we breathe, the theme of World Meteorological Day this year, reminds us of the close relationship between them.
读书是为了按自己爱好去学习，去享受乐趣，这是我们作为人的享有之物，就好像赐给我们呼吸的空气一样。
Read to enjoy and learn on your terms that is a human being's gift, like the air we are given to breathe.
但是对我们每一个人来讲，实际上我们的四周就是我们的环境：我们呼吸的空气、我们喝的水、我们脚下走的土地。
But for each of us, our environment is literally what surrounds us: the air we breathe, the water we drink, the land we walk on.
我们呼吸的空气，饮用的水，生长食物的土壤，是全球脆弱生态系统的一部分，这一系统所承受的人类活动的压力日益加大。
The air we breathe, the water we drink and the soil that grows our food are part of a delicate global ecosystem that is increasingly under pressure from human activities.
无论我们选择开车、乘坐公共交通工具、步行还是骑自行车，都会直接影响我们呼吸的空气的质量、人类的健康和地球的环境质量。
Whether we choose to go by car, public transport, walk or cycle has a direct impact on the quality of the air we breathe, our health and that of the planet.
这些微生物被命名为anammox，它可以把碱和有害的氨转化成氮气，无害的氮气是我们呼吸的空气的主要组成成分，占到了空气的78%。
These creatures, now called anammox bacteria, transform caustic and hazardous ammonium into dinitrogen, the harmless nitrogen gas that makes up 78% of the air we breathe.
此外，在一个拥挤的城市，这些绿色空间能让我们呼吸一下新鲜的空气和有一个地方放松一天的紧张。
Furthermore, in a congested city these green spaces offer a breath of fresh air and a place to relax from the rigours of the day.
王女士：连呼吸的空气我们都还得担心受怕，这不是件令人悲哀的事吗？
Mrs. Wang: Isn’t it sad that we have to be so careful and worry about the air we breathe?
我们呼吸的频率是由大脑控制的，当感觉到空气浓度的变化时会变快。
The rate at which we breathe is controlled by the brain, which is quick to sense changes in gas concentrations.
我们受益于他人的情感投入之多，就像我们需要时刻呼吸空气，就像我们每日需要享用食物。
We use the emotional input of other humans as much as we do the air we breathe and the food we eat.
但谁应该看护我们所有人的共有资源？比如说我们呼吸着的空气？
ROBINSON But who should take care of the resources that we all share, such as the air we breath?
但我们知道，生命最初始于海洋，从第一个奇特的生命体从海洋中冒出来，在空气中呼吸，在类似这里的海滨上呼吸。
Yet we know that life came out of the sea, as the first peculiar living forms flopped out, and gasped in air, on such a beach as this.
但我们知道，生命最初始于海洋，从第一个奇特的生命体从海洋中冒出来，在空气中呼吸，在类似这里的海滨上呼吸。
Yet we know that life came out of the sea, as the first peculiar living forms flopped out, and gasped in air, on such a beach as this.
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