穷源溯流是什么意思_穷源溯流用英语怎么说_穷源溯流的翻译_穷源溯流翻译成_穷源溯流的中文意思_穷源溯流怎么读,穷源溯流的读音,穷源溯流的用法,穷源溯流的例句

释义

• trace to the very source of sth.; get to the bottom of the matter and inquire into the course of its development