外贸函电翻译 很急请各位高手帮帮忙翻译一下这句话：请把你方4671号信用证的装船日期和有效期分别展至11月30日和12月

请把你方4671号信用证的装船日期和有效期分别展至11月30日和12月15日,并注意修改通知书要在10月30日前到达我处,否则我方绝不可能在11月份装运.
Please revise the L/C（its NO.:4671）as below:
Extend the shipment date to November 30th and update the expiration date to December 15th.We are unable to arrange the shippment if we can not receive the Amendment Advice before October 30th.

Pls extend the shipment date and validity of L/C No.4671 to Nov.30th and Dec.15th.And also be aware that notification of amendment should arrive before Oct.30th,or we can't finish the shipment in November.

Please kindly revise L/C No.4671 as below:
Shipment date delay to Nov. 30 and expiration date delay to Dec. 15, and please kindly send the Revise Advice before Oct. 30, otherwise we can not arrange the shipment within Nov.

Put your side, No. 4671 of the shipment date and the validity of letters of credit were it to the November 30 and 12, 15, and pay attention to modify the notice of October 30 to arrive at my office, or otherwise not likely in November shipment.