We offer you our best prices,at which we have done a lot business with other customers
问题描述：
We offer you our best prices,at which we have done a lot business with other customers
对于at which这个地方引导的定语从句不是太懂,请高手将这两个句子拆开区分出来,
答
1. We offer you our best prices.
2.We have done a lot of business with other customers at the prices.
区分的重点在于记住 “以...价格”是at the price(s) of.