名词短语
中文翻译：直接比例
同义词：
['proportion', 'ratio例句：1. The cost of the product is in direct ratio to its quality.（产品的成本与其质量成正比。）2. The sales figures are in direct ratio to the advertising budget.（销售额与广告预算成正比。）3. The relationship between the two variables is in direct ratio.（两个变量之间的关系是正比的。）']
例句：
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1. The cost of the product is in direct ratio to its quality.
产品的成本与其质量成正比。
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2. The sales figures are in direct ratio to the advertising budget.
销售额与广告预算成正比。
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3. The relationship between the two variables is in direct ratio.
两个变量之间的关系是正比的。