Tom:
This is the best material we have to offer .

这是本公司所供应的最好的原料。
Mary:
Actually ,I don’t think we need it to be this good .

说实在的,我并不认为我们用得着这么好的.
Tom:
I can let you have this kind cheaper .

我可以算你便宜一点。
Mary:
Let’s do that .

那就这么说定吧。