名词
中文翻译：变体
同义词：
['variation', 'variationist', 'variant']
例句：
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1. The geneticists have discovered several new variants of the virus.
遗传学家已经发现了几种新的病毒变种。
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2.The scientist experimented with various variations of the formula.
科学家尝试了各种公式的变体。
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3. The researchers found that the bacteria had undergone several variations in their DNA sequence.
研究人员发现细菌的DNA序列经历了几次变异。