形容词
中文翻译：极度虚弱的
同义词：
['extremely weak', 'very weak']
例句：
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1. The old man was so weak that he couldn't even lift his own weight.
老人非常虚弱，连自己的体重都举不起。
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2. She felt extremely weak after the long flight.
长途飞行后她感到非常虚弱。
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3. The baby was so weak that it couldn't walk yet.
婴儿非常虚弱，还不能走路。