我们这么长时间没有他的音信，都以为他死了。

We hadn't heard from him for so long, we'd given him up for dead.

《牛津词典》

他悉心地照料着它，但由于长时间未下雨，玉米快枯死了。

He worked on it with the greatest care, but the corn was dying because there had been no rain for a long time.

youdao

他们“虽然还要一些时间倒下，但已经死了”，这位退休教授表示。

They "will take some time to fall over, but they are dead," says the professor emeritus.

youdao

Even there, a horse is not really a rigid body, unless it's been dead for a long time.

马甚至都不是真正的刚体,除非是死了很长时间了

耶鲁公开课 - 基础物理课程节选