This offer is firm subject to your acceptance reaching us not later than December 15.
此报盘为实盘,但以我方在12月15日前收到你方答复为准。
The city was equipped with a drainage system, for a great many clay pipes were found beneath the narrow streets.
城里甚至还敷设了排水系统,因为在狭窄的街道底下发现了许许多多陶土制作的排水管道。