sharpening
FREQ #28531
n. 加强；刻石；削尖；锐磨
词形变化
sharpenings
复数
sharpenings
释义与例句
n.
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1.
The act by which something is sharpened.
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2.
The debris produced when a pencil is sharpened.
复数形式
v.
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1.
present participle and gerund of sharpen