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n.削刀,磨床,磨器,磨具

sharpener为短语/超纲词汇

/'ʃɑ:pnə(r);`ʃɑrpənɚ/
n (usu in compounds 通常用以构成复合词) device that sharpens 磨具; 削具
*a `pencil-sharpener
* a `knife-sharpener.

n[C]

a tool or machine for sharpening pencils, knives etc

1. This stone acts as a knife-sharpener.
这块石头被用作磨刀石。

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