名词短语中文翻译
中文翻译：比例子类数
同义词：
['比例子类数量，比例子类数目例句：1. The proportion of students in the class is proportional to their age.（班上学生的比例与他们的年龄成正比。）']
例句：
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1. The proportion of students in the class is proportional to their age.
班上学生的比例与他们的年龄成正比。
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2.The proportion of males to females in the population is a key factor in determining the success of the economy.
人口中男性和女性的比例是决定经济成功的关键因素。
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3. The proportion of carbon dioxide emissions from cars is increasing, which is causing global warming.
汽车排放的二氧化碳比例正在增加，这导致了全球变暖。