你到那里时他们已经离开了吗？

Had they left before you got there?

《牛津词典》

不管他们怎么做到这点，拉皮塔人穿越了太平洋的三分之一，分散居住在那里，并称其离开是出于一些只有他们才知道的原因。

However they did it, the Lapita spread themselves a third of the way across the Pacific, then called it quits for reasons known only to them.

youdao

他问她是不是他们要离开那里。

He asked her if they were leaving there.

youdao

Certainly in Princeton we encourage students to find their favorite affinity groups and make connections and then find ways to leave them as well. -Right.

当然了，在普林斯顿，我们鼓励学生们,自己去找最喜欢的兴趣小组,互相交流,而且，他们也会在时候恰当之时离开那里，-的确。

普林斯顿公开课 - 人性课程节选