说来说去 talk and talk
Explanation
反复地、多次地说明；说话罗嗦，重复；总而言之
repeatedly explain something multiple times; talk verbosely and repetitively; in short
Origin Story
老张是一位经验丰富的园艺师，他家后院有一个美丽的果园。一天，一位年轻的园艺师小李来向老张请教种植技术的难题。小李说来说去，始终没抓住问题的核心。老张耐心地听完小李的描述后，总结道：“说来说去，问题就在于土壤的酸碱度不平衡。你需要调整土壤的PH值，才能保证果树健康生长。”小李恍然大悟，连连道谢。
Old Zhang was an experienced gardener with a beautiful orchard in his backyard. One day, a young gardener, Xiao Li, came to ask Old Zhang for advice on a difficult planting technique. Xiao Li talked and talked, but he never got to the core of the problem. After patiently listening to Xiao Li's description, Old Zhang summarized: "In short, the problem is that the soil pH is not balanced. You need to adjust the pH of the soil to ensure the healthy growth of fruit trees." Xiao Li suddenly understood and thanked him repeatedly.
Usage
多用于口语，表示反复说明，或总而言之的意思。
Mostly used in spoken language, expressing repeated explanation or summarizing meaning.
Examples
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他总是说来说去，就是不肯说明白
ta zong shi shuo lai shuo qu, jiu shi bu ken shuo ming bai
He kept talking around the subject, but wouldn't explain clearly