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AMAZING BODY

Why do I have boogers ?

作者:TEENS
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我们为什么会有鼻屎?

We use our noses to breathe and smell. Our noses make a lot of “rubbish” every day. They make boogers.

Boogers are very useful. They are dried mucus (干的黏液). Mucus is sticky (黏黏的). When we breathe, it can catch dirt and germs.
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