名词
中文翻译：蛋白质
同义词：
['amino acid', 'nucleic acid', 'amino sugar']
例句：
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1. Proteins are essential forthe growth and maintenance of life.
蛋白质对于生命的生长和维持至关重要。
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2. Thebody needs a variety ofproteins to function properly.
身体需要各种蛋白质来正常运作。
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3. Protein is an important source of energy forathletes.
蛋白质是运动员重要的能量来源。