英语词汇has been proven useful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	has been proven useful
释义	proven adj — 经过验证的 adj • 证实的 adj prove to be— 属 useful adj — 有用 adj • 有用的 adj • 有益 adj • 好用 adj • 管用 adj • 顶事 adj has-been — 过气
随便看	is at the bottom is at the center is at the core of everything we do is at the core of everything we do is at the end of i sat the exam I sat the exam is at the expense of is at the fore is at the fore is at the forefront is at the foundation is at the foundation is at the heart of is at the heart of is at the heart of quality is at the highest level is at the meeting is at the mercy of is at the origin of creation is at the origin of creation is at the risk of the user is at the risk of the user is at the same time is at the same time

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。

proven adj —