名词
中文翻译：变体
同义词：
['variant', 'variation', 'change例句：1. The genetic makeup of the species has undergone several variations over time.（这个物种的遗传构成在时间上经历了几次变化。）2. The researchers found that the virus had a variant that was resistant to certain treatments.（研究人员发现，这种病毒有一种变异株，对某些治疗具有抵抗力。）']
例句：
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1. The genetic makeup of the species has undergone several variations over time.
这个物种的遗传构成在时间上经历了几次变化。
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2. The researchers found that the virus had a variant that was resistant to certain treatments.
研究人员发现，这种病毒有一种变异株，对某些治疗具有抵抗力。
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3.The climate in this region has undergone significant changes over the past century.
该地区的气候在过去一个世纪发生了显著的变化。