英语词汇and only if necessary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	and only if necessary
释义	if and only if — 当且仅当若且唯若 See also: if only — 只要 • 嘦 • 庶几 only if conj— 只有 adv
随便看	disputed receivables disputed region disputed reports disputed statistics disputed territories disputed territory disputed transactions disputed use disputed whether dispute findings dispute handling dispute has arisen dispute has been resolved dispute has been settled dispute hereunder dispute in question dispute in relation dispute involved dispute involving litigation dispute in writing dispute is resolved dispute is settled dispute is submitted dispute is submitted to arbitration dispute issue

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。

if and only if —