形容词
中文翻译：虚弱的
同义词：
['feeble', 'feeble-minded', 'powerless', 'incapacitated', 'frail', 'feeble-spirited']
例句：
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1. The old man was weak from lack of exercise.
老人由于缺乏锻炼而身体虚弱。
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2. The baby is too weak to walk yet.
这个婴儿还太弱，不能走路。
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3. The team's performance was weak due to lack of preparation.
团队的表现因为缺乏准备而显得软弱。