英语词汇challenge the validity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	challenge the validity
释义	challenge n — 挑战 n • 质疑 n • 难题 n challenge v — 挑战 v • 质疑 v • 怀疑 v validity n — 有效 n • 效性 n • 效力 n validity — 有效性 • 真实性 challenge — 将军 the 1960s— 六十年代 the 1970s— 七十年代
随便看	phase focusing phase for phase gate phase grating phase ground phase I clinical trials phase i construction. phase ii clinical trial phase ii development phase iii clinical trial phase iii double-blind phase I-iii clinical trials phase iii trials phase ii ongoing phase ii Trial phase imaging phase imbalance phase in phase in between phase indication phase indicator phase information phase in life phase-in period phase-in products

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 —