英语翻译

题目

英语翻译
1.the chief difficulty in accepting your orders is the heavy backlog of commitments.
2.we regret our inability to make any arrangement contrary to our usual practice ,which is payment by confirmed,irrevocable letter of credit payable against presentation of shipping documents and valid for at least 15 days beyond the promised date of shipment

答案

1,要接受你们的订货的主要障碍在于我们需要作出大量存货的承诺
2,我们很遗憾不能按正常的流程来接你们的订单.(正常的流程是一旦付款得到确认,货运单据提交后,在承诺的货运日后的15日将不可撤消)