英语词汇effectiveness for a given period of time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	effectiveness for a given period of time
释义	effectiveness for a given period of time— 时效 See also: a period of time— 期 • 一时 period of time — 期间 • 阵子 • 时光
随便看	3 4 quarter 3 4 raglan sleeves 3 4 rotation 3 4 sleeve 3 4 sleeved shirts 3 4 sleeve Jersey 3 4" socket 3 4 st 34.-std.-woche 34.-std.-woche 34 stone 3.4. synthesis 34th floor 3 4 time 3 4 time job 3 4 ton 3 - 4 units 3 - 4 units per day 34 venues 3-4-weeks-internships 3-4-weeks-internships 3 4 wrench 3 4 year 34-year-high set 34-year-old man

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。

effectiveness for a given period of time—