单词	iff
释义	iff 1 of 2 conjunction ˈif-ᵊn(d)-ˈōn-lē-ˌif  ˈif, sometimes read with a prolonged f  : if and only if two figures are congruent iff one can be placed over the other so that they coincide —used in logic and mathematics IFF 2 of 2 abbreviation identification, friend or foe Word History Etymology Conjunction alteration of if entry 1 First Known Use Conjunction 1955, in the meaning defined above
随便看	make hay make head make headway make heavy weather of make history make into a big deal make it make it (through) make it a point to make it a point to (do something) make it a point to do something make it a rule make it one's business make it plain make it snappy make it through make it up make it up to make it up to (someone) make it up to someone make it worth your while make known make landfall make light of make light work of

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。