sharpen /ˈʃɑːpən/ CET4 TEM4 ( sharpening, sharpened, sharpens )

• 1. 

  V-T/V-I If your senses, understanding, or skills sharpen or are sharpened, you become better at noticing things, thinking, or doing something. 使敏锐; 增强

  例：

  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。

  例：

  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。

• 2. 

  V-T If you sharpen an object, you make its edge very thin or you make its end pointed. 使变锋利; 弄尖

  例：

  He started to sharpen his knife.

  他开始磨刀。