thing of the past

基本解释

Developers often hesitate to use PNGs due to the limited support in browsers, but this is now a thing of the past.
开发人员经常犹豫了，使用 PNG 由于在浏览器，有限的支持，但这现在是一件事的过去。
All the participants felt that job security is a thing of the past because companies and corporations are cutting expenses by shedding high-salary employees.
所有参加谈话的人都认为，工作保障已经是过去的事了，因为各公司企业都在通过解聘高薪雇员来节省开支。
www.voanews.com.cn
The announcement sent a signal to David Trimble and the Unionists that for Sinn Fein and the IRA, violence, as Adams had said, is a thing of the past, over, done with, and gone.
这一消息给了戴维·特林布尔和北爱统一党成员这样一个信号——正如亚当斯所说，对新芬党和爱尔兰共和军而言，暴力是“过去的事，结束了，完结了，逝去了”。

He's not against the radio telescope surveys that have been the mainstay of SETI for the past 50 years, but he says maybe we're looking for the wrong thing.
They thought bank runs were a thing of the past.
他们还以为银行挤兑是过去才发生的事儿
耶鲁公开课 - 金融市场课程节选
We could really I think make large scale of extreme poverty the thing in the past.
我认为，我们一定会让大规模,极度贫困成为往事。
普林斯顿公开课 - 人性课程节选

Putting a router in your living room could become a thing of the past.
FORBES: This Announcement From Samsung Should Have Cable Companies Quaking