名词
中文翻译：Unknown
同义词：
['malnutrition', 'emaciation', 'starvation']
例句：
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1. The boy has been marasmus for several weeks now.
这个男孩已经营养不良几周了。
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2. Marasmus can be caused by a lack of essential nutrients in the diet.
营养不良可能是由于饮食中缺乏必需营养素引起的。
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3. During his illness, he was unable to eat properly and developed marasmus.
在他生病期间，他无法正常进食，导致营养不足，发展为消瘦。