形容词
中文翻译：单一的
同义词：
['unique', 'sole', 'singular例句：1. The single mother struggled to make ends meet.（这位单身母亲努力维持生计。）']
例句：
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1. The single mother struggled to make ends meet.
这位单身母亲努力维持生计。
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2.He is a single man who has no family.
他是一个单身汉，没有家庭。
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3. She is the only one in her class who can play the piano.
她是她班上唯一一个会弹钢琴的人。