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24-08-2021
Biology

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Why do you blink

This is what it looks like when you blink with your eyes and mouth

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24-08-2021

Ans我们每一个人都在不断地眨眼，正常人每分钟要眨眼10～20次，每次眨眼的时间约0.2～0.4秒

除去睡眠时间，一个人一天要眨眼1万次左右，人体中最忙碌的算是提睑肌了

每次眨眼间隔时间仅4～5秒钟wer:

lanation:

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