形容词
中文翻译：虚弱的
同义词：
['weak', 'feeble', 'frail', 'sickly']
例句：
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1. He is a man of great strength but has been suffering from illness for the past few months.
他是一个强壮的人，但过去几个月一直生病。
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2. The old lady was weak and could hardly walk.
那位老太太身体虚弱，几乎走不动路。
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3. The baby is very sickly;he needs constant care.
这个婴儿非常虚弱，需要持续的照顾。