completely expiration

• 失效

completely expiration的用法和样例：

例句

1. A contract subject to a time of expiration is extinguished at such time.
   附终止期限的合同，自期限届满时失效。
2. The last date on which the option may be exercised is called the expiration date or the maturity date.
   期权存在的最后一天称为失效日或者到期日。