sharpen

vt.& vi.

使锐利；使敏捷；加重；削尖

vi.

尖锐；变锋利；

过去式：sharpened过去分词：sharpened现在分词：sharpening第三人称单数：sharpens

sharpen up使……更敏锐；认真思考

1. My pencil is blunt, could you lend me a knife to sharpen it?
   我的铅笔钝了，你能借我把刀子削一削吗？
2. Generations of urban living sharpened their wits.
   世代居住在城市里使他们磨练了才智。
3. Strikes will sharpen the country's dilemma.
   罢工将加剧这个国家的困境。

1. The soldiers sharpened up their knives.
   战士们把刀磨得锋利。
2. Jane voice sharpened as she became impatient.
   简变得不耐烦了，声音也变尖了。
3. The debate sharpened considerably.
   辩论变得相当激烈。

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