这次他在床上躺了三个星期，仿佛有一个世纪之久。

The three weeks he spent on his back this time seemed an entire age.

youdao

我和他共事达六年之久。

I worked with him over a span of six years.

《牛津词典》

亚里士多德的科学理论统治西方思想长达1500年之久。

Aristotle's scientific theories dominated Western thought for fifteen hundred years.

《柯林斯英汉双解大词典》

I did that for about 10 months of period, and that resulted it being a better or the best Chinese search technology.

这样做了有10个月之久，结果就是,百度拥有了更好或者是最好的中文搜索技术。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

And so you'll learn over time both by seeing and by doing that there are generally some good ways, some okay ways, and some bad ways of actually writing code.

久而久之，你们将通过看和实践来学习到,这里通常有很好的方法，还行的方法，很烂的方法来编写代码。

哈佛公开课 - 计算机科学课程节选

I was going to say when you first start doing this, even people who have been doing it for a long time still go off on ten-minute daydreams before realizing that their minds were wondering.

我本想说第一次尝试时，但即便是修行多年的人,也会走神十分钟之久,方才意识到自己刚做了白日梦。

普林斯顿公开课 - 人性课程节选