英语词汇upon 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	upon the validity
释义	upon — 上 validity n — 有效 n • 效性 n • 效力 n validity — 有效性 • 真实性 the 1960s— 六十年代 the 1970s— 七十年代
随便看	virus sample virus scan virus scanner virus scanning virus scanning engine virus-scanning software virus signature virus signature file virus specific virus spread virus spreading virus strain virus strikes virus structure virus take virus testing virus that infects bacteria virus threat virus transmission virus warning virus was reported virus, worm or Trojan horse virus, worm or Trojan horse virus, worm, Trojan virus, worm, Trojan

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 —