名词
中文翻译：Unknown
同义词：
['derivation', 'derivative structure', 'derivative system']
例句：
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1. The new drug is a derivative of the old one.
新药是旧药的衍生物。
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2. The molecule has a derivative structure that makes it stable.
这个分子有一个衍生结构，使其稳定。
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3. The study of genetics is a derivative of chemistry.
遗传学的研究是化学的一个分支。