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.
健康、纯洁、新鲜、欢快、可以随意呼吸的空气已充满他的周围。
The pure, healthful, living, joyous air that was easy to breathe inundated him.
我们都知道私家车尾气对我们所呼吸的空气是有害的。
We all know that the off-gas from private car is harmful to the air that we breathe.
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.
研究还发现伦敦人呼吸的空气远比加纳的阿克拉的空气有害。
It found that Londoners breathe in air that is more harmful than that in Accra, the capital of Ghana.
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.
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?
制造氧气和让火星拥有可供呼吸的空气至少在理论上是可行的。
Making oxygen and giving Mars a breathable atmosphere is at least theoretically possible.
占世界儿童总数近二分之一的约七亿儿童呼吸的空气受到烟草烟雾污染。
Around 700 million children, or almost half of the world's total, breathe air polluted by tobacco smoke.
一个气泡就是一个静水力场，其中充满了供城市居民呼吸的空气。
The bubbles are hydrostatic force-fields that contain breathable atmospheres for the city's inhabitants.
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?
三层楼的超市，就连层高都小一些，这使人觉得可供呼吸的空气都不足。
Even the ceilings in the three-story building were low, pushing the illusion of air to breathe into the minuses.
人类呼吸的空气、喝下的水和摄入的食物，无一不令人类时刻感知到大自然的影响。
Man is constantly aware of the influence of nature in the form of the air he breathes, the water he drinks, and the food he eats.
你是否以为待在办公室内，你所呼吸的空气就比你外出吃午餐或下班回家路上来得干净、安全呢？
Do you think that by staying in your office you are breathing cleaner, safer air than when you go outside for lunch or are on the way back home from work?
科学家说，它们呼吸的空气毒性极大，会杀死其它任何哺乳动物，或引起不可逆转的脑损伤。
The air they breathe is so toxic that it would kill or lead to irreversible brain damage in any other mammal, the scientists said.
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.
不过，您可以采取简单的步骤，特别关注您的饮食、饮用水以及呼吸的空气，以降低这些化学物质对后代的风险。
You can, however, take simple steps to reduce the risk to your offspring by paying special attention to what you eat, drink and 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.
但也会让没有戒备心的人误以为，既然当地绝大多数时候空气质量状况指标为绿色，那么他们呼吸的空气基本上就是安全无害的。
But it might also lead the unwary to assume, if most days in the place he inhabits are green, that the air he is breathing is basically safe.
生活中确实有很多的事情值得我们感激，我们每日呼吸的空气，我们所居住的城镇，我们赖以生存的工作，在头顶上我们遮风避雨的屋顶。
There truly is so much to be grateful for, the air we breathe, the country we live in, the job that allows us to put food on the table and a roof over our heads.
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.
它不会在地球上散播神经毒性汞；它不会用烟尘和硫堵塞城市空气和呼吸者的肺。
It does not distribute neurotoxic mercury around the planet; it does not clog city air and the lungs of those who breathe it with soot and sulfur.
它不会在地球上散播神经毒性汞；它不会用烟尘和硫堵塞城市空气和呼吸者的肺。
It does not distribute neurotoxic mercury around the planet; it does not clog city air and the lungs of those who breathe it with soot and sulfur.
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