以下全手动
1.If our is not acceptable,please cable your best counter-offer.
如果我们（的价钱或条件之类）不能被接受,请给出你能接受的底线.
2.Since the market is advancing today ,the prices we offered you is the best,I believe.
在如今这个发展迅速的市场,我相信我们给出的价钱是最好的.
3.As your prices are too high ,we have to decline your offer.
因为你的要价太高,我们只好撤销订单.
4.we have the offer ready for you.The offer is valid for 3 days.
合同已经准备好了,有效期为3天.
5.We offer you 1,500 tons of Canada Oats at the price of ￡40 per ton.
我们愿意以每吨40英镑的价格提供1500吨加拿大燕麦.