Writing letters seems to be a thing of the past.

写信好像已是昔日的事情了。

《牛津词典》

If followed, these suggestions will make disastrous earthquakes almost a thing of the past.

如果遵循这些建议，灾难性地震将成为过去。

youdao

One day drought may be a thing of the past at least in coastal cities.

至少在沿海城市，总有一天干旱会成为过去。

youdao

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

Meredith McGehee, policy director for the Campaign Legal Center, says over-the-top wining and dining, a hallmark of past conventions, is probably a thing of the past--but there will still be "a fair amount of partying" going on.

FORBES: Magazine Article

So a veteran player, even an iconic one, might want to accept the fact that a final big score that carries past his 40th birthday may be a thing of the past.

FORBES: Tulo is the Future, not Jeter

Expanding supply chains has been particularly burdensome in the past, but this is becoming more a thing of the past.

FORBES: Manufacturing Forecast - Growth Expected in 2013