请注意第 0426 合约项下的 2000 台电脑备妥待运已久,但至今未收到你方的有关信用证,开来,以便。 Please note that the 2000_____ of computers ____ Contract No. 0426 have been ready for some time, but your covering L/C hasn't reached us yet. Please open_____ as soon as possible so that we may effect ____.