这里我们来考察下在人类生离死别的经历时的一般的规律。

There are some general patterns in the human experience of loss that will be valuable to examine here.

youdao

语言的共时差异往往反映历时的演变，濒危语言也是一样。

Synchronic differences in language often reflect the diachronic evolution, so do the endangered languages.

youdao

不同坡度下，随着降雨历时的增加，土壤结皮的影响在降低。

On each gradient, the effects of soil crust are decreasing with rainfall time.

youdao

So a lot of teaching and learning can be thought as less synchronic activities and more diachronic one.

所以很多教学可以被看成是,不限于一时的而有历时变化的。

麻省理工公开课 - 媒体、教育、市场课程节选

All right. I need to come back to synchrony and diachrony.

好，现在我们回到了语言的同步分析和历时分析上。

耶鲁公开课 - 文学理论导论课程节选

I think, a collection of epic poems written in Sanskrit that goes back-- it was actually written over a course of 1,000 years and it was completed in the fourth century.

这是本用梵文编著的史诗作品集,可以追溯到...,事实上这本作品的创作时间历时近千年,最终完稿于公元四世纪

耶鲁公开课 - 金融市场课程节选