1、A/R [at the rate of]
2、There's also alarm at the rate of deforestation in Indonesia.
3、He placed the horse at the stable to remain at livery at the rate of 30 shillings a day.
4、At the cinema we see successive photographs projected on a screen at the rate of twenty-four frames per second.
5、One object is pulsing at the rate of 44 times a second.
6、At school, I won a scholarship and first prize in type writing, at the rate of 62 words per minute.
