Tom:
I’m calling about mistake on our last invoice .

我打电话来,是因为上回的发票有错。
Mary:
What was it ?

怎么啦。
Tom:
We should have been given the large quantity price .

你应该开大宗折扣价才是。
Mary:
Yes ,that is absolutely right .

啊,对的,是应该这样。