Since that evening I haven't once slept through the night.

自那晚之后，我再也没睡过一次囫囵觉。

《柯林斯英汉双解大词典》

Since the party she had only spoken to him once.

那次聚会以后，她只和他说过一次话。

《牛津词典》

Since the success of her novel, people shake her hand who once wouldn't have given her the time of day.

自从她的小说获得成功之后，曾经懒得答理她的人也跟她握起手来。

《牛津词典》

"But since you are here, please telephone for a taxi cab at once."

VOA: special.2009.01.31

And since we have two bars that are together like this, once they're both loaded up with electrons there's going to be negative charges that repel, so the electrons will want to get as far away as possible, and they're on their slow way to doing that, to getting as far away from each other as possible.

因为我们有两个棒像这样在一起，一旦它们加载了电子,就会因为有负电荷而排斥，所以这些电子就会,互相离开的尽可能远，它们的这个过程很慢，离开的尽可能远。

麻省理工公开课 - 化学原理课程节选

And since the incident, the once-warm ties between Israel and Turkey have chilled.

VOA: standard.2010.08.09

The Youth Justice Board should spend more of its annual budget on prevention rather than detention, they say, since once in custody, three-quarters of young people go on to offend again.

BBC: offenders learning to rewire a plug

The Coolpix 4800 has a resolution of "only" four megapixels, but they do toss in an 8.3x optical zoom lens (it's actually the smallest digital camera with that much optical zoom), which is nice since once most consumers realize they don't need more than four or five megapixels stuff like optical zoom and lens quality is going to be become a bigger and bigger deal.

ENGADGET: blogger-avatar

But spam, at least, is in decline, which ought to be cause for celebration, particularly since it once seemed so unstoppable.

ECONOMIST: Unwanted e-mails are no longer the menace they once were