请翻译以下此段? time schedule was presented with zero date based on down-payment 13 july2009. it was stressed by htas that l/c is not valid as foreseen in the contract, 2months after effective date. htas is prepared to give a grace up to 1 september.after this date zero date will be agreed upon. 大意: 制定进度表时,2009/7/13首付,将该日作为起始日。 受htas限制,合同中规定,信用证一旦起效,有效期为两个月。 htas可将起始日最多宽限至sep 1st,将该日作为起始日。查看更多