I could tell from her expression that something serious had happened.

一看她的脸色我就知道出了很严重的事情。

youdao

I've been so worried that it could be something serious.

我一直很担心会是什么严重的问题。

youdao

That "something serious is afoot" is a description, not an explanation.

“这个严重事件是多么不寻常”只是一个描述，并不是解释。

youdao

It occurs as a result of something underlying which can be potentially serious."

VOA: special.2009.09.02

It's the sage and serious doctrine of virginity that concludes the speech. It's clear that something's happened between 1634 and 1637.

它是总结演说,有关童贞的智慧而严肃的教义,很明显，在1634年到1637年间发生过什么。

耶鲁公开课 - 弥尔顿课程节选

with something also really serious.

严肃庄严之间的一种很好的平衡。

正在实习 - SpeakingMax英语口语达人

"Every time you get something suspicious you go into alarm mode, " fearing that pains and aches could be something serious.

CNN: Edwards: Cancer 'no longer curable'

"The next time I am going to vote Republican if he doesn't do something serious and concrete for immigration reform, " he says.

CNN: Casting ballots on both sides of the U.S.-Mexico border

"I have a sick son, who has done something serious, " she said.

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