形容词
中文翻译：没有精神的
同义词：
['feeble', 'listless', 'lethargic']
例句：
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1. She lookedvery tired and unfocused when shearrived at the meeting.
她到达会议时看起来很疲惫，注意力不集中。
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2. The old manwas so weak that he could hardly walk.
老人虚弱到几乎走不动了。
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3. After along day of work, she felt completelydrained and listless.
工作了一整天后，她感到非常疲惫和无力。