sharpen
英 /'ʃɑːrpən/美 /'ʃɑrpən/
释义
vt. 使尖锐, 使敏捷, 加重, 削尖\nvi. 尖锐化, 变锋利 sharpen up 使……更敏锐；认真思考
例句
Her gaze sharpened, as if she had seen something unusual.
她眼睛一亮，好像看到了不寻常的东西。
He will need to sharpen his diplomatic skills in order to work with Congress.
他将需要增强外交技巧以与国会打交道。