between you, me, and the gatepost idiom informal (also between you, me, and the bedpost)
“你我私下说说”，“不要告诉别人”（用于表达希望对话不要外泄）
an expression used to tell someone that what you are about to say should be kept secret
英汉双解词典收录81607条英汉双解翻译词条，基本涵盖了全部常用单词的读音、翻译及用法，是英语学习的有利工具。