英语词汇has been a challenge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 a challenge
释义	challenge n — 挑战 n • 质疑 n • 难题 n challenge v — 挑战 v • 质疑 v • 怀疑 v has-been — 过气 challenge — 将军
随便看	nuclear magnetic imaging nuclear magnetic resonance nuclear magnetic resonance imaging nuclear magnetic resonance spectroscopy nuclear market nuclear material nuclear material accountancy nuclear mechanism nuclear medicine nuclear medicine Clinics nuclear medicine departments nuclear medicine facilities nuclear Medicine physician nuclear medicine therapy nuclear meltdown nuclear membrane nuclear might nuclear military powers nuclear mine nuclear missile nuclear missiles nuclear model nuclear Nations nuclear negotiations nuclear nonproliferation

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。

challenge n —