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SUPER SCIENCE

Cheese! This smile looks strange

作者:TEENS
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为什么一拍照就不会笑了?

When we laugh and look happy, two muscles (肌肉) on our face move. They control (控制) our mouth and eyes. But when we take a photo, we just pretend5 to smile most of the time. So, we only move our mouth. This makes our smile look strange. 

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