We intend to place large regular orders, and would therefore like to know what quantity discounts you allow.
我方将定期大量订购,因此想知道你方给多少数量折扣。
Precautions of this sort are necessary, for it is impossible to foretell the exact nature of the difficulties which will confront the pot-holer.
作出这样的准备是必要的,因为无法预见到洞穴探险者究竟会遇到什么性质的困难。