形容词
中文翻译：虚弱的
同义词：
['frail', 'feeble', 'feeble-minded', 'flabby', 'frailty']
例句：
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1. The old man is weak from his age.
老人因为年纪大而身体虚弱。
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2. The baby was so weak that she couldn't walk by herself.
婴儿太虚弱了，以至于她不能自己走路。
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3. The team's performance was weak in the crucial match.
在关键的比赛中，球队的表现很弱。