我们希望加上一条，信用证有效期应至货物装船后第15日截止。要把所有装船

我们希望加上一条，信用证有效期应至货物装船后第15日截止。要把所有装船单据都准备好以便提交银行议付，有时需
要一个星期左右。加上这样一条可以让我们的时间充裕一点。

結果 (英文) 1:

We hope to add a letter of credit shall be valid until the 15th day after shipment. To get all the shipping documents prepared for submission to the Bank for negotiation, it is sometimes necessaryA week or so. And this allows us enough time.

結果 (英文) 3:

We wish to add that the credit is valid until fifteenth days after the date of shipment. All shipping documents are to be prepared for presentation to the bank for negotiation.For a week or so. Plus this one can give us a little more time.