动词
中文翻译：变软
同义词：
['soften', 'soften', 'mellow']
例句：
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1. The fabric softener in thelaundry detergent makes clothes softer.
洗衣液中的柔顺剂让衣物变得更柔软。
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2. As the weather gets colder,it's important to keep your handsand feet warm by using a hand warmeror foot warmer.
随着天气变冷，使用手暖器或足暖器来保持手和脚温暖是很重要的。
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3. Thesoup was so thick that it needed tobe heated up before eating.
汤太浓了，需要加热后才能食用。