当他最终慢慢睡着时，头疼才减轻了。

It was only when he finally drifted off to sleep that the headaches eased.

《柯林斯英汉双解大词典》

当她第二次拨号时，才意识到没有拨号音。

It was only as she tried for the second time that she realized that there was no dialling tone.

《柯林斯英汉双解大词典》

当一个精疲力尽的朋友游上岸时，他才得救。

He was rescued only when an exhausted friend swam ashore.

《柯林斯英汉双解大词典》

And only when one has accepted that, is there any possibility of scoring a bull's eye.

只有当一个人意识到这一点，才能够射中靶心。

普林斯顿公开课 - 人性课程节选

But when you look at the bill, it is very expensive and you can't afford to pay that.

但当你看见账单时，你才发现这太贵了，你负担不起。

I can 课堂 - SpeakingMax英语口语达人

For Plato" he says "also is of the opinion that it is impossible for the disorders of the state ever to be taken away until sovereigns be philosophers."

对于柏拉图，他说道,也相信只有当一国君王,自己成为了哲学家,才可能将一国的纷乱扫尽“

耶鲁公开课 - 政治哲学导论课程节选