以
... at a rate of 以...速度 at a run 跑；正在跑 at all costs 不惜任何代价 ...
以……的速度
... at this rate：照这种情形、既然这样； at a rate of：以……的速度； define：给……下定义、限定； ...
按的比率
at a rate of 按的比率; 以..
根据一份报告，大水在以每天8至10英寸的速度逼近。
If such practices are unchecked, half the species in the Coral triangle will continue to disappear at a rate of 1-2% a year.如果这些行为不加以制止，那么珊瑚三角区内一半的物种将以每年1-2％的速度继续消亡。
Danielle Steel, the 71-year-old romance novelist is notoriously productive, having published 179 books at a rate of up to seven a year.71岁的浪漫小说家丹妮尔·斯蒂尔是出了名的高产，以每年多达7本的速度出版了179本书。
New diet books appear at a rate of nearly one a week.新的饮食类书籍差不多一周出一本。
Car hijackings are running at a rate of nearly 50 a day.劫车事件的发生率高达每天近50起。
The water is advancing at a rate of 5cm a day.水位正以每天5厘米的速度上升。
He's getting through the ironing at a rate of knots.他熨烫衣服做得飞快.
The world urban population is rocketing upwards at a rate of 6.5 per cent per year.世界城市人口以每年6.5%的速度急速上升.
World energy demand is increasing at a rate of about 'uff13'uff05 per year.世界能源的需求量正以每年百分之三的速度递增.
The Sahara desert, for example, creeps southward at a rate of thirty miles annually.例如, 撒哈拉沙漠以每年30英里的速度向南方推移.
They traveled at a rate of 55 miles per hour.他们以每小时55英里的速度前进.
The whole industry grows at a rate of 30 % annually.整个产业以年均30%以上的速度增长.
I got through the work at a rate of knots.我很快结束了工作.
He went out of the house at a rate of knots.他很快从屋子里跑出来.
This parking space is under a five - year lease at a rate of six thousand per annum.这个停车位租期五年,租金为每年六千元.
Since 1976, the world has been warming at a rate of 2 T a century.1976年以来, 世界气候以每世纪高2摄氏度的速度在变暖.
