形容词
中文翻译：虚弱的
同义词：
['feeble', 'frail', 'feeble-minded']
例句：
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1.The old man was weak from lack ofexercise.
老人由于缺乏锻炼而身体虚弱。
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2.The child is weak because he hasn't eaten enough.
孩子因为吃得不够而身体虚弱。
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3. The scientist found the experiment tobe weak in its conclusions.
科学家发现实验的结论薄弱。