The strike comes in light of an unsuccessful 19 months of negotiations after the existing labor contract known as the Interactive Media Agreement expired in late 2014.
2019年6月六级真题(第二套)阅读 Section C
柯林斯高阶英汉双解学习词典释义
VERB
到期;期满;失效
When something such as a contract, deadline, or visa expires, it comes to an end or is no longer valid.