He was imprisoned for two concurrent terms of 30 months and 18 months.

他被判处30个月和18个月的监禁，合并执行。

《牛津词典》

The terms synchronous and asynchronous are often confused with the terms sequential and concurrent.

术语同步 和异步 经常与顺序 和并发 混淆了。

youdao

With Web sites, we talk about load in terms of concurrent users, which does not necessarily mean that every user is requesting a page at the exact same moment, which is a common misconception.

对于网站，我们常常从并发用户的角度来讨论负载问题，这并不一定意味着每个用户都在完全相同的时刻请求某个网页，这其实是一种常见的误解。

youdao

The new ruling, in a second appeal, means Mr Lim will serve two concurrent 18-month prison terms, and as a result will lose his seat in Parliament.

ECONOMIST: Malaysia��s rough justice

And the President has been, was, and continues to be willing to do more in terms of spending reductions, but there has to be a concurrent willingness on the Republican side to make some compromises, too.

WHITEHOUSE: Press Briefing