英语句子填空90%ofthecreditamountmustbepaid()theprsentationofdocuments.against为什么,

Question

英语句子填空
90% of the credit amount must be paid( ) the prsentation of documents.
against为什么,

Answer 1

90% of the credit amount must be paid (against) the presentation of documents.
按照提交的文件,赊帐金额的90%必须被支付.
against,意思为依据（某种条件或文件）来做某事.