英语词汇concentration on/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	concentration on/upon
释义	请查阅词条：concentration
随便看	windless wind load wind machine windmill window window box window cleaner window dressing windowed window frame windowing window ledge windowless window of opportunity window of vulnerability window on/into/to windowpane Windows window seat window-shop window-shopper window sill windows of the soul window tax wind pack

英汉双解词典包含131075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。