英语词汇improvement upon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	improvement upon
释义	improvement — 进步 • 好转 • 转好 upon — 上 improvement n — 改善 n improve — 改善 • 完善 • 改良 • 进步 • 好转 • 好起来 improve v — 提高 v
随便看	residues in foodstuffs residues in soil residues limits residues of residues of compounds Residues of veterinary drugs residue trials residue use residue waste residue#´ residue#´ residue#´ residue#´ residuing resign resignable resign a Government post resign a position resign a post resign a right resign as member resignation announcement resignation at the end of resignation date resignation declaration

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。

improvement —