形容词
中文翻译：无伴侣的
同义词：
['single', 'solitary', 'unmarried', 'bachelor']
例句：
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1. Heis a mateless man who has never married.
他是一个从未结婚的单身男人。
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2.The couple was mateless and had no children.
这对夫妇是单身，没有孩子。
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3. She is mateless and doesn't want to settle down.
她单身，不想安定下来。