a 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。
For Strauss, living on credit, desperate to work, but with no job in sight, that dream looks a thing of the past, not the future.
对于像斯特劳斯这样依靠信用卡生活的人来说他们急需工作却根本找不到，美国梦是过去式而不是将来式。
If we spared the middleman and distributed those corn and grain crops directly to the poor and needy, world hunger would be a thing of the past.
如果我们抹掉这个中间环节，把那些玉米和谷物直接分配到贫穷和有需要的人受伤，世界饥饿很快就会成为历史。

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

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