Customers can get huge discounts by booking in advance. 客户提前预订可以享受很低的折扣。

+on/off Air Canada are currently offering a 10% discount on selected airfares. 加拿大航空公司目前在指定航线上提供飞机票价9折优惠。

at a discount (=at less than the usual price) All tickets are now available at a discount. 低于正常价格；打折扣