... and I do need some advice on a difficult problem.
……我的确有一个难题要请教你。
We must make it clear from the very beginning that competitive quotations are acceptable.
必须一开始就讲清的是,有竞争力的报价可以接受。
I'm afraid I can't agree with you. That's a good way of giving information, but it's not a good way of persuading people. For one thing, it's boring, and people aren't going to read an ad that looks boring. For another thing, one computer looks very like