Non-refundable不能退款

①used to describe money that you pay that you cannot get back
如non-refundable deposit/fee/down-payment不退還押金/費(fèi)用/預(yù)付款。
②used to describe something that you cannot return after you have bought it

【例句】
At this point, the purchaser will have to pay a 10% non-refundable cash deposit to the auctioneer.
這點(diǎn)上，買家須向拍賣人支付10%不可退還的保證金。

The check-in desks close 40 minutes prior to departure, so if you're late, you're stuck with a nonrefundable ticket.
登機(jī)手續(xù)辦理處在起飛前40分鐘關(guān)閉，如果你遲到了，你的機(jī)票錢便不會退還。