动词
中文翻译：将食物煮熟至坚硬的程度同义词
同义词：
['hardboil', 'toughen']
例句：
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1. The chef hard-boiled eggs before serving them to the guests.
厨师在上菜前将鸡蛋煮熟。
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2. To make a hearty soup, you'll need to toughen up some vegetables.
要做出一锅浓郁的汤，你需要把一些蔬菜煮得更硬一些。
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3. The meat was so tough that it needed to be softened with hot water.
肉太硬了，需要用热水来软化。