关注你的呼吸有多重，当你吸入空气时你的鼻孔是什么感觉，呼出气时又是什么感觉，在你的肺里有多少空气，你呼吸的速度是多少等等。

Notice how deeply you breathe, what your nostrils feel like when you breathe in, how they feel breathing out, how much air is in your lungs, how fast you're breathing, and so on.

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尼古丁鼻腔喷雾器发挥的作用速度快于尼古丁口香糖、含片和吸入器。

The nasal spray also works faster than does nicotine gum, lozenges and the inhaler.

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比赛中有的运动员会突然出现腹痛，其原因一般来说是准备活动做得不充分，加上天气比较冷，开始跑时吸入了大量的冷空气或起跑速度过快等，出现“岔气”现象。

Some athletes may suffer a sudden abdominal pain during the race, which is often caused by insufficient warming-up exercise, a cold weather so that a lot of cold air is inhaled, or running too fast.

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