Amazing body
Why do I have boogers ?
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 (细菌).
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