英语词汇useful when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	useful when
释义	useful adj — 有用 adj • 有用的 adj • 有益 adj • 好用 adj • 管用 adj • 顶事 adj when — 时 • 一旦 • 曷 when conj — 如果 conj • 既然 conj • 考虑到 conj • 当...时 conj when?— 几时 • 什么时候 • 何日 • 几点 • 多早晚
随便看	series of raids series of reactions series of reasons series of recommendations series of related series of relationships series of representations series of reservations series of reviews series of rings series of robots series of rooms series of rows series of rules series of sales series of samples series of scandals series of scenes series of sculptures series of securities series of separate series of sessions series of shares series of situations series of small

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。

useful adj —