基本解释
拼音：yán liú sù yuán
注音：ㄧㄢˊㄌㄧㄡˊㄙㄨˋㄩㄢˊ
解释：沿流：顺着水流；溯源：探索源头。循着水流寻找源头。原比喻作文时由次要的写到主要的，最后点出主题。后比喻探讨事物的本末。
出处：晋·陆机《文赋》：“或因枝以振叶，或沿波而讨源。”
单字解释：
沿
流
溯
源
英语解释
Along the flow: along the flow; Tracing: exploring the source. Follow the current to find the source. In the original metaphorical composition, the minor is written into the major, and the theme is pointed out at the end. The latter metaphor discusses the origin and end of things.
