Two days later the book had already landed on his desk.

两天后，这本书意外地出现在了他的桌子上。

《柯林斯英汉双解大词典》

Two days later tragedy struck.

两天后悲剧发生了。

《牛津词典》

Three days later a rash appeared.

三天后出现了皮疹。

《牛津词典》

He says they gave complete protection if administered immediately and up to fifty percent protection if administered up to five days later.

VOA: special.2009.03.04

At some point, maybe a week later, four to eight days later, you would start to see antibody levels rise.

之后,或许一周之后,四天到八天之间,就可以看到抗体的浓度开始上升

耶鲁公开课 - 生物医学工程探索课程节选

And then I think it was two days later,a week later, I came across another quote of somebody saying, Oh,we all die alone.

然后两天还是一周之后，我又看见另一个引言，说我们将孤独而死。

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Two days later, we arrived at a cluster of yurts to shelter from rain.

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Several days later Dr. Gordon Schwartz of Jefferson Medical College in Philadelphia called back with an opening.

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The infamous sign was stolen in December last year and recovered in three pieces three days later.

BBC: Auschwitz sign theft: Swedish man jailed