Drawback: a disadvantage or problem that makes sth a less attractive idea 缺点;不利条件
The main drawback to it is the cost.
它的主要缺点是成本高。
This is the one major drawback of the new system.
这是新系统的一大弊端。
Delivery: he act of taking goods, letters, etc. to the people they have been sent to 传送;递送;交付
a delivery van
厢式送货车
Please pay for goods on delivery(= when you receive them).
请货到付款。
Allow 28 days for delivery.
请留出 28 天送货时间。
Is there a postal/mail delivery on Saturdays?
星期六送邮件吗？
When can you take delivery of(= be available to receive)the car?
你何时能提取那辆汽车？
the delivery of public services
提供公共事业服务
Waive: to choose not to demand sth in a particular case, even though you have a legal or official right to do so 放弃(权利、要求等)
Rebate: an amount of money that is taken away from the cost of sth, before you pay for it 回扣,返还(退还的部份货价);折扣
Buyers are offered a cash rebate.
购买者享受现金回扣
