It first infects you because you breathe in some of the infectious agents.

只要吸入病原体，你就会被感染。

For the most part, however, we breathe in the aromas which surround us without being consciously aware of their importance to us.

然而，在大多数时候，我们呼吸着周围的香气，却没有意识到它们对我们的重要性。

When there's a fire, follow the teachers' instructions, leave the classroom quickly and use a piece of cloth to cover your mouth and nose so that you don't breathe in smoke.

发生火灾时，按照老师的指示，迅速离开教室，用一块布遮住口鼻，以免吸入烟雾。

In smoggy weather, the machine would breathe in the air in front of the bike and blow out a stream of clean air toward the biker's face.

在有雾霾的天气里，机器会吸进自行车前面的空气，然后向骑自行车的人的脸上吹出一股清新的空气。

O Sit outside and breathe in the air.

坐在室外，呼吸新鲜空气。

Breathe in and out; then switch back and forth.

吸入、呼出，然后再切换往复。

Notice how your hands move as you breathe in and out.

注意双手在呼吸时如何地运动。

Try to breathe in between sentences, and don't talk too much.

尝试下在每个句子之间调整下呼吸，不要说得太多。

Breathe in through your nose, and out through your mouth. Slowly.

用你的鼻子吸气，然后从嘴里呼出来，慢慢的，重复这一动作。

Now open one nostril and breathe in and out slowly then switch nostrils.

露出一个鼻孔慢慢地呼吸，然后换一个鼻孔。

Breathe in deeply, filling your senses with the fresh cool sweetness.

深深地吸一口气，主自己充满新鲜凉快的甜蜜感觉。

Ensure you breathe in on the way down, and breathe out as you push up.

确保你在下卧的时候吸气，在推起的时候吐气。

Always breathe in through your nose and breathe out through your mouth.

一直通过鼻子吸气、通过嘴巴呼气。

Breathe in slowly for five seconds, then breathe out slowly for five seconds.

慢慢地用5秒时间吸入空气然后再用5秒时间慢慢地吐气。

Slowly breathe in and picture a calming person, place, or object in your mind.

一边想象着能让你冷静下来的人，地点，事件，一边缓慢呼吸。

These muscles contract when we breathe in, expanding the lungs and drawing in air.

当我们吸气的时候，这些肌肉就收缩，扩大肺部并吸入空气。

It is recommended to breathe in when lifting and out when lowering the weight.

建议举起的时候吸气，放下的时候呼气。

Turns out when the recently dead breathe in your face they show you the future.

原来，当刚死的人朝你脸上吐气的时候，你会看到自己的未来。

Stay relaxed and breathe in and out slowly. Make sure you don't hold your breath.

放松，慢慢地吸气，呼气。确保你没有屏住呼吸。

Take a deep, slow breath from your belly, and silently count to 4 as you breathe in.

用腹部做一次缓慢、深深的吸气，在这个过程中默数4下。

They live in air thick with viral loads, and they are exposed every time they breathe in.

它们活在病毒萦绕的污浊空气里，每吸一口气，都暴露在病毒当中。

Mostly every summer I have to go to the emergency room because I can't breathe in the summer.

几乎每个夏天，我不得不去急诊室，因为我在夏天无法呼吸。

It cannot be understated just how important it is to let elements breathe in your design.

“留白”对于网页设计是很重要的，留白不至于让你页面元素都堆积在一起。

From there, start alternating inhalations and exhalations: As you breathe in, he breathes out.

从那里开始，交互地吸入和呼出：当你吸入，他呼出。

Breathe in, and breathe out, and pay attention to your breath as it comes in and goes out.

吸气，然后呼气，当气体吸进去和呼出去时把注意力都集中在你的呼吸上。

The way to over come nervousness is to breathe in deep and breathe out slowly for some times.

克服紧张的办法是调匀呼吸，深吸气，慢呼出。

This also implies there are people whose job it is to chew gum and breathe in people's faces.

其实，这种事情的背后，隐含着这样一种职业的存在：有人专门吃口香糖，然后往其他人脸上呼气，让对方闻一闻味道如何。