名词
中文翻译：偶然变异
同义词：
['random variation', 'chance variation']
例句：
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1.The geneticists were surprised to find that the population had a chance variation in its genes.
遗传学家们惊讶地发现，这个种群的基因中存在随机变异。
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2. The scientists conducted experiments to study the effect of chance variations on the growth rate of plants.
科学家们进行了实验，研究随机变异对植物生长率的影响。
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3. Due to the chance variations in the climate, the crops yield was significantly affected.
由于气候的随机变异，农作物的产量受到了显著影响。