形容词
中文翻译：锋利的
同义词：
['sharp', 'keen', 'acute', 'pointed']
例句：
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1. The knife is sharp enough to cut through butter.
这把刀足够锋利，可以切黄油。
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2. He sharpened his knives before the big game.
他在大比赛前磨利了他的刀。
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3. She sharpened her skills in the field of medicine.
她在医学领域磨练了她的技能。