sharp·en 
(shärpən)
(shärpən)tr. & intr.v. sharp·ened, sharp·en·ing, sharp·ens
To make or become sharp or sharper.
sharpen·er n.
| 单词 | sharpen |
| 释义 | sharp·en (shärpən)tr. & intr.v. sharp·ened, sharp·en·ing, sharp·ens To make or become sharp or sharper. sharpen·er n. |
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