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Super science

Make brushing fun

作者:TEENS
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刷牙可以这么有趣



This wide-eyed (睁大眼睛的) owl looks cute, doesn’t it? In fact, it’s a sand timer (沙漏计时器). Turn over its eyes and it starts to time (计时). When the sand runs out, your brushing is done. You can also store your toothbrush in its belly.What a good helper!

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