英语词汇retention challenges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	retention challenges
释义	retention n — 保留 n • 留用 n retention — 滞留 challenges pl — 挑战 n challenge n — 挑战 n • 难题 n • 质疑 n challenge v — 挑战 v • 质疑 v • 怀疑 v challenge — 将军
随便看	mould polishing mould pressing mould pressure mould process mould production mould products mould-proof mould protection mould public opinion, mould public opinion, mould public opinion, mould public opinion, mould quickly mould release mould release agent mould releasing agent mould removal mould requirements mould resin mould resistant mould ripened cheese moulds and patterns moulds and tools mould section mould shaping

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。

retention n —