英语词汇certificates upon request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	certificates upon request
释义	certificates pl — 证书 n • 证明书 pl upon request n— 应要 n upon request— 应...之请 upon — 上 request v — 要求 v • 请 v • 申请 v • 索要 v • 搬请 v request n — 要求 n • 请求 n
随便看	was hard for me was hard hit was hardly was hardly affected was hardly ever was hardly known was hard to judge was hard to see wash area was harmed was harmless for wash around was harvested was has been wash ashore wash at 40°C was haunted was haunting was having was having a lot of fun was having fun wash away wash away sins washback effect' washback effect'

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。

certificates pl —