rate
单词辨析：
普通用词，指交通工具等运动的速率或事情发生的速度。
The train went by at high speed.
火车疾驶而过。
This new plane can reach a speed of 900 kilometres an hour.
这架新飞机的时速可以达到900公里。
We had to increase the speed of delivery.
我们必须加快送货速度。
指人步行的速度，常引申为生活、变化等的速度。
He quickened his pace.
他加快了步伐。
The pace of change has accelerated.
变革的步伐在加速。
In the world today, mankind is progressing at a tremendous pace.
在当今世界，人类进步一日千里。
常指某事在一段时间内发生的速度，可与 speed 换用。
His money was running out at an alarming rate/speed.
他的钱用得很快，速度惊人。
The rate/speed of economic growth has slowed down.
经济增长速度放缓了。
物理学术语，指物体沿着一定方向运动时的速度；作普通意义上的速度解时，则指高速。
The jet plane is flying at the velocity of sound.
喷气机正在以音速飞行。
The students were asked to calculate the velocity of light.
要求学生计算出光的速度。
Leopards can move with an astonishing velocity.
豹子跑起来速度惊人。
相关例句：
At this rate they'd be lucky to get home before eight-thirty or nine.
这样看来他们能在8点半或是9点以前到家就算幸运了。
She rated the course highly
她对这门课的评价很高。
The rate at which hair grows can be agonisingly slow
头发生长的速度可能极其缓慢。
Most rated it a hit
大多数人认为它很受欢迎。
The government insisted that it would not be panicked into interest rate cuts.
政府坚称不会陷入恐慌而匆忙降息。
Its artistic value failed to move Paddy Clegg. 'I don't know what all the fuss is about. I didn't rate it at all,' he said.
它的艺术价值没能打动帕迪·克莱格。“我不知道这样大惊小怪是为什么。我一点儿也不看好它，”他说道。