英语翻译请真正懂外贸的高手翻译下,如果只是在金山词霸里搜索给我答案就免了.1:20% advance in 3 work

英语翻译
请真正懂外贸的高手翻译下,如果只是在金山词霸里搜索给我答案就免了.
1:20% advance in 3 working days of contract date and 100% pyt of prov invoice immediately on faxing copy of DOCTS after price fixing the 20% deposit to be adjusted
2:10% deposit against contract to be released after price fixing and 100% of provisional invoice to be paid by LC at sight of good chinese bank
3:provisional invoice to be issued by seller but20% advance will not be deducted advance payment to be adjusted on final invoice only