英语词汇upon 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	upon challenge
释义	upon — 上 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	attractive improvement attractive incentives attractive in design attractive industries attractive in itself attractive interest attractive interface attractive investment attractive investment climate attractive investment destination attractive investment environment attractive job attractive landmark attractive landscape attractive layout attractive learning attractive levels attractive loans attractive location attractive looking attractively attractively designed attractively located attractively presented attractively priced

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。

upon —