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1、rate的中文意思是：速度；进度。

2、例句：

Most people walk at an average rate of 5 kilometres an hour.大多数人步行的平均速度为每小时5公里。

The number of reported crimes is increasing at an alarming rate.报警案件的数量正在以惊人的速度增长。

Figures published today show another fall in the rate of inflation.今天公布的数字表明通货膨胀率又一次下降。