This ticket has passed its expiration date, and so it is now invalid.
这张票已过了有效期，现在作废了。
An expiration, especially of a contract or an agreement.
满期终止，特别是合同或协议的终止
An instrument for measuring the force or volume of inspiration or expiration in the lungs.
呼吸气量测定器；肺活量计用以测量肺部吸入或呼出空气的力量或体积的一种仪器
