at a rate

• adv. 按 ... 的比率(以 ... 的速度)

at a rate的用法和样例：

例句

1. Having to do with enterprises that produce goods or are capable of producing goods at a rate that barely covers production costs.
   边际效用的与某种企业的生产有关，这种企业以正好收回生产成本的比率进行生产或能够以此比率生产