他用牙签清理牙齿。

他用牙签清理牙齿。

He is cleaning his teeth with a toothpick.

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He is cleaning his teeth with a toothpick.

toothpick 是由 tooth(牙齿)和 pick(挑选、剔)组成的复合词,字面意思是"剔牙的工具",即"牙签"。

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