名词
中文翻译：比例
同义词：
['proportion', 'proportionate', 'ratio', 'proportions']
例句：
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1. The teacher explained the problem in a ratio of 3:4.
老师以3:4的比例解释了这个问题。
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2. The book is divided into two parts with a ratio of 5:7.
这本书分为两部分，比例为5:7。
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3. The ratio of sugar to water in this recipe is 1:2.
食谱中糖与水的比例是1:2。