It was a question which deserved serious consideration.

这是一个值得认真考虑的问题。

《柯林斯英汉双解大词典》

It was an attempt to elevate football to a subject worthy of serious study.

这是试图将足球拔高成一门学科来进行严肃的研究。

《牛津词典》

It wasn't serious—it was all done in fun.

那不是认真的，全是闹着玩的。

《牛津词典》

He was distracted, he was going too fast, and it ended up causing one death and some serious trauma and tragedy for the rest of the community."

VOA: special.2010.07.01

And it turned out that another, not quite as deadly, but still very serious disease called syphilis was also common in this part of the world at that time.

现在已知另外一种疾病,它并不完全致命但也很严重,它叫梅毒,在那时的一些地方也很常见

耶鲁公开课 - 生物医学工程探索课程节选

It was a serious problem with Apollo Thirteen.

VOA: special.2009.07.22

That was a signal that it was serious.

FORBES: Why Companies are Terrible at Selecting, Retaining and Motivating Their Talent

But there was one accusation hurled by Icahn that was not just a school yard insult, it was a serious allegation, and Ackman made sure to respond to it firmly.

FORBES: The Most Serious Accusation Carl Icahn Made Against Bill Ackman In Their CNBC Deathmatch

Welsh by birth, American by citizenship, he took over Japan's most admired company in 2005, when it was in serious trouble, and turned it around in the face of immense cultural obstacles.

ECONOMIST: Where the influential people meet and talk