英语词汇keystone principle怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	keystone principle
释义	keystone — 标砖 principle n — 则 n • 原理 n • 正 n • 道 n • 道理 n • 理则 n
随便看	my friends have a my friend's parents my friends say that my friends told me my friends who my friend went my friend who my frustration my full commitment my full potential my full support my functioning my funny Valentine my future my future career my future plans my future work my gear my General my generation my German my girlfriend my goal is my goal would be my God!

英汉双解词典包含2273206条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。

keystone —