一直什么的英文

All the while, study for stability is a hot difficult point in engineering.

长期以来，边坡的稳定性研究一直是工程界和学术界的'热点和难点问题之一。

All the while they were left in the dark about the case.

这事他们一直被蒙在鼓里。

You'll water the plants while I'm away, won't you?

我外出的时候请你给花草浇浇水，行不行？

Her parents died while she was still at school.

她还在读书时父母就去世了。

He'll do the job if you make it worth his while.

你要是给他的报酬丰厚，他会做这份工作的。