英语词汇period of usefulness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	period of usefulness
释义	请查阅词条：usefulness
随便看	withdrawers withdraw from withdrawing withdrawing-chamber withdrawing room withdrawing-room with drawings withdrawment withdrawn withdrawn withdrawnness withdrawnnesses withdraw oneself withdraw one's labour withdraw/remove/replace gradually withdraws withdraw to withdrew withe with eagerness with ease with effect from with effect from with effort with effort

英汉双解词典包含464360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。