是出去时吸入冷空气了，不是必须的不要让孩子出门了。
Is out cold air when inhaled, is not necessary not to let the baby go out.
如果直接吸入冷空气，可能会觉得咽喉疼痛。 可以透过围巾或者滑雪口罩呼吸。
Some runners may experience throat irritation if they breathe cold air directly—avoid this by wearing and breathing through a scarf or ski mask.
这样既有助于保暖又可以给那些你不得不吸入的冷空气增加一些温度和湿度。
This will help retain your own body heat around your nose and mouth and will add some warmth and moisture to the air you breathe in.
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.
但从理论上来讲，只有通过与吸入的冷空气进行热量交换，打哈欠才能为大脑降温。
But according to the theory, yawning cools the brain via a heat exchange with cooler air drawn in during the process.
但从理论上来讲，只有通过与吸入的冷空气进行热量交换，打哈欠才能为大脑降温。
But according to the theory, yawning cools the brain via a heat exchange with cooler air drawn in during the process.
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