[no obj.](of a document, authorization, or agreement)cease to be valid, typically after a fixed period of time
(文件,授权书,协议)期满;成为无效;失效
-
his driving licence expired .他的驾驶执照过期了。
(of a period of time)come to an end
(期限)终止
-
the three-year period has expired .三年的时间已经结束。
(of a person)die
(人)死亡,断气。
[with obj.]
〈技〉 呼(气)。
"late Middle English: from Old French