单词expiration date
n.: 有效期限
网络: 到期日；截止日期；到期时间
（文件、协议等的）到期日，截止日期；（物品、食品等的）有效期:
the date after which an official document, agreement, etc. is no longer valid, or after which sth should not be used or eaten
截止日期
到期日
产品有效期
有效期限
Why would you drink that? It was more than a week past the expiration date.
你为什么要喝那个？已经过期一周了。
Corresponds to the expiration date of a contract. The last day on which an option may be exercised into the underlying futures contract.
合约的有效期限。期权在原生期货合约执行的最后交易日。
The license has no expiration date and must be displayed prominently in the facility to which it applies.
许可证没有到期日期，必须突出地显示在该设施它适用于哪些。
You can define an expiration date and time for the message, after which the recipient will no longer be able to open or view it.
你可以给邮件设定一个过期日期和时间，过期之后即使是收件人也无法打开或者阅读邮件。
Links must be do-follow, permanent, active and with no expiration date and must not need any additional payments.
链接必须做到遵循的，永久的，积极的和没有到期日期，不得不需要任何额外款项。
But here"s what makes Drop. io unique: When you upload a file, the service asks you to put an expiration date on it.
但Drop.io的特别之处在于：当你上传了一个文件，服务会让你为文件设定一个截止日期。
We have to restrict the length of time for which a ticket can be used, perhaps give each ticket some kind of expiration date.
我们必须限制每一张票可以用多长的时间，也许可以给每张票设一个有效期。
Where expiration date of alcoholic drink is required to be indicated by the state, it shall be indicated on the conspicuous places.
按国家规定应标明产品有效期限的酒类，应在明显位置标明。
What was the expiration date of your passport?
你的护照是什么时候到期？
Put -Call Parity The relationship between the price of a put and the price of a call on the same underlying with the same expiration date .
买入-出售价差对同一种证券、到期日相同的出售期权价格与买入期权价格之间的关系。