英语语法分析

There are foreign and domestic accounts as to the Chinese pedagogy headstream.

关于中国教育学的源头，有源自国外和国内两说。

Zhou Culture of Huanghe valley and Chu Culture of Changjiang valley are the headstream of Hua Xia Culture.

黄河流域的周文化与长江流域的楚文化是构成华夏文化的两大源头。

In the software procedure management, requirement analysis is the foundation and headstream of the whole work.

在软件过程管理系统中，需求分析是所有工作的基础和源头，是重中之重。