胸无城府的英文：
be simple and candid; be unsophisticated
He has nothing hidden in the mind.
他胸无城府。
He was forty-five years of age, of medium height, fairly thick-set, not at all unprepossessing
他已经45岁，中等身材，矮矮胖胖的，不完全是胸无城府的。
adj. 简单的；单纯的
n. 笨蛋
Simple pushbuttons for simple functions are good.
对于简单的功能来说，简单的按钮就足够了。
This book has a simple premise:
本书有一个简单的前提：
He is Spaniard pure and simple
他是一个纯血统的西班牙人
adj. 坦诚的；偷拍的；公正的
blackball a candidate
投票反对一候选人.
The candidate tampered with voters.
该候选人收买了投票人。
The candidate was put in the other day.
这个候选人不久前当选了。
adj. 单纯的；不复杂的；纯正的
It is not unsophisticated in style.
它的风格不复杂。
Carrie was unsophisticated and emotional.
嘉莉单纯又多情。
An unsophisticated country fellowwho completely lacked polish
全无文雅气质不懂世故的乡下人