Three years since the 大学三年以来
years since first exposure 暴露后年数
since two years ago 自从两年前 ; 时间点 ; 自从两年前以来
Since eight years ago 自从八年前
Since her five years old 自从她五岁起
Since Years 多年来
Since Many Years 多年来
It's twenty years since I've seen her.
我已经二十年没见她了。
It's years since I've had a sore throat like I did last night.
我已经好多年没有像昨晚那样嗓子痛了。
我们多年没有见面了。
It had been almost ten years since the last major soccer league in the United States had closed down.
VOA: special.2010.06.02
We've had no down years since 1987--1987 that was the crash in October that I talked about earlier.
987年以后我们就没有亏损过,正是刚提过在十月发生了股灾的那个1987年
So, you know, it has changed a lot since, I guess, over the last ten years or so,
所以,大概是在过去的十年里,我想,它变了很多,
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