n.比率，比例

原形：ratio复数：ratios

The ratio of schoolboys to schoolgirls is 1 to 1.
男学生和女学生的比例是1比1。
The golden ratio is 0.67.
黄金比例是0.67.
The ratio of boys to girls in the class is 3:2.
班级里男孩和女孩的比例是3:2。
The company's profit margin is a crucial ratio for investors to consider.
公司的利润率是投资者需要考虑的关键比率。
The debt-to-equity ratio reflects a company's financial leverage.
债务与权益比率反映了公司的财务杠杆。
The ideal compression ratio for a high-performance engine is around 10:1.
高性能发动机的理想压缩比约为10:1。
The crime rate has decreased by a ratio of 20% compared to last year.
犯罪率比去年下降了20%。
In chemistry, the mole ratio is essential for balancing chemical equations.
在化学中，摩尔比例对于平衡化学方程式至关重要。
The teacher asked us to find the ratio of the circumference to the diameter of a circle.
老师让我们找出圆的周长与直径的比值。
The speed-to-weight ratio of a sports car affects its acceleration capabilities.
跑车的速度与重量比影响其加速能力。
The GDP growth rate is a key indicator of a country's economic health.
GDP增长率是一个国家经济健康状况的关键指标。
The success rate of this medical treatment is as high as 90%.
这种医疗治疗的成功率高达90%。