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	relatively long distance relatively long history relatively long time relatively loose relatively low relatively low amount relatively low cost relatively low demand relatively lower costs relatively lower price relatively low growth relatively low key relatively low level relatively low price relatively low-skilled relatively low speeds relatively marginal relatively mature relatively merits relatively mild relatively minor relatively minor in nature relatively mobile relatively moderate relatively modest

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 —