n.到期，期满，截止，告终

The film has passed its expiration date.
这个胶卷已过了有效期。
By default, the expiration time is set to one hour.
在默认情况下，过期时间设置为一小时。
They can renew the agreement of agency upon its expiration.
他们可以在代理协议期满时续订。
The expiration date on the milk carton says it's good until next week.
牛奶盒上的有效期标明它到下周前都是好的。
Remember to check the expiration dates when you're grocery shopping.
记得在买杂货时检查一下保质期。
His driver's license is due for expiration next month.
他的驾驶执照下个月就要到期了。
The coupon expires at midnight tonight, so be sure to use it before then.
优惠券在今晚午夜到期，确保在此之前使用它。
The contract will expire in six months, and we need to start negotiating a new one.
合同将在六个月后到期，我们需要开始谈判新的合同。
The patent for the drug expired last year, allowing other companies to produce generic versions.
这种药物的专利去年到期了，其他公司现在可以生产其仿制药版本。
The breath of the dying man came in short, expiring gasps.
那濒死之人的呼吸短促而微弱，仿佛即将耗尽。
It's important to replace your smoke alarm batteries before their expiration to ensure safety.
在电池失效前更换烟雾报警器的电池以确保安全是很重要的。
The lease on our apartment expires at the end of the year, and we're considering moving.
我们公寓的租约年底到期，我们正在考虑搬家。
The credit card I used for that subscription expired, so I need to update my payment information.
我用来订阅那个服务的信用卡已经过期了，所以我需要更新我的支付信息。