We can live with the other terms, but the delivery date is too soon.
译文：我们可以同意其它条件，但发货日期还是太紧了。 

Couldnt you make it ...... instead of ......? That would give us enough time to assemble the machine and meet the deadline set by our customer.
译文：不能将......周改为......周吗？这样我们才有足 够时间组装机器从而满足顾客要求的期限。 

I dont think we can meet the delivery date you suggest.
译文：我想我们无法满足贵方提出的交货日期。 

Couldnt you extend the delivery period by ...... or so? That would make things much easier for us.
译文：贵方不能将交货期再延长......吗？ 那会让我们易办得多。 

Yes, I think we could bring the date forward by ...... or so. But Id have to check with Headquarters before I can give you a firm promise.
译文：是的。我想我们可以将日期推迟......左右。 但我要向总部请示后才能给你一个正式答复。 

Now, as far as delivery dates are concerned, there shouldnt be any problems.
译文：现在，就有关的发货日期而言应该再没有什么问题了吧！ 

You mustnt let us down on delivery dates.
译文：贵方不能在发货日期上对我方失约。 

We can let you have the first batch in ...... and the balance in about ......,from today, that is.
译文：从今天开始计算，你们能在.......后收到第一批货， 其余的货物大约......内送到。就这样。 

O.K., thats agreed then. ......pcs in ...... and the rest in early .......
译文：好吧。就这样定下来。......内收到......件。 然后......初收到其余的货物。