名词
中文翻译：孤儿
同义词：
['vagabond', 'beggar', 'orphan']
例句：
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1. The waif was found by the police after a week of wandering.
这个孤儿在流浪了一周后被警方发现。
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2. He was a waif in his village, without family or friends.
他在村里是个无家可归的孩子，没有家人或朋友。
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3. The waif was taken in by a kind family who provided for her needs.
这个孤儿被一个善良的家庭收留，满足了她的需求。