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SUPER SCIENCE

Where does the dirt in our eyes go?

作者:TEENS
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掉进眼睛的异物去哪儿了?

When things like eyelashes (睫毛) or dust fall in our eyes, our eyes get watery. The water brings some of the dirt out. But some sticky dirt can stay there for a while. It can become sleep (眼屎) in the corner of your eyes. 

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