Since then, we've lived far apart and never seen each other again.

从那以后， 我们山南海北再也没有见过面。

《新英汉大辞典》

youdao

I have never caught a cold since I was born.

自从我出生以来，我从来没有感冒过。

youdao

I've never understood that myself since we outnumber the men in actual numbers, and we live five years longer.

VOA: special.2010.08.08

Ever since this was first proposed, there has never been any observations that do not coincide with the idea, that did not match the fact that the probability density is equal to the wave function squared.

从未有，任何观测，与它相抵触,从没有过，波函数的平方不等于,概率密度的情况，关于马克思，波恩。

麻省理工公开课 - 化学原理课程节选

This would be good luck if you were long and now suddenly you got a huge return that you would not have thought was possible since you've never seen it before.

如果你长期持有这份投资,你就走运了,回报如此之高,你自己都没有料到,可能你也从来没有见过这种情况

耶鲁公开课 - 金融市场课程节选

Stay-at-home spouse who never paid into Social Security: With a stay-at-home spouse, since they never paid into Social Security, their only option is to take a spousal benefit starting at or after age 62.

FORBES: Five Things You May Not Know About Social Security, But Should

Since we never get her point of view again, this celestial music never returns.

NPR: 'Hitchcock's Music' Scores Big on Suspense

Since I never spoke to him, it seems unlikely, but at least it was a passion unscathed by disappointment.

NPR: Part One