穷原竟委 go to the heart of the matter
try to analyze the chain of cause and effect
- 开展一个新的课题研究,必然始于穷原竟委的探究过程,即必须以史为鉴,以今日不足为由,以明日发展为标。
To set out a new question for discussion, the process, which is based on the history, weakness, and intending reformation, must be gone through.