名词
中文翻译：分数
同义词：
['part', 'slice', 'portion', 'segment']
例句：
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1. Thefraction of the population that is over65 years old is increasing.
65岁以上人口比例在增加。
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2. Thescientist used a fraction ofthe sample to test the hypothesis.
科学家用样本的一部分来测试假设。
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3.The chef divided the cake into several fractions for sharing.
厨师将蛋糕切成几份供大家分享。