形容词
中文翻译：虚弱的
同义词：
['feeble', 'feeble-minded']
例句：
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1. The old man is weak from his age.
老人因年老体弱。
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2. The team needs a strong leader to guide them through the tough times.
团队需要一个坚强的领导者来带领他们度过难关。
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3. The baby is so weak that she can hardly walk.
婴儿太虚弱了，几乎走不了路。