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n.条件，设想；不确定的情况
conj.（表条件）如果；（表假设）要是，假如；无论何时；虽然，即使；（用于间接疑问）是否；（用于礼貌问询）是否；当，每次；（与情\u
1、iff───abbr.敌我识别XiTong (Identification Friendor Foe)；conj.当且应当(ifandonlyif)
2、sif───abbr.中音频（soundintermediatefrequency）；n.(Sif)人名；(瑞典)西夫
3、Rif───abbr.雷达识别装置 (Radar Identification Set)；精简兵员 (Reductionin Force)；记录信息栏 (Record Information Field)；n.(Rif)人名；(法、芬)里夫
4、ifs───abbr.国际科学基金会 (International Foundationfor Science)；间质性体液间隙（nterstitialfluidspace）；国际测量员联合会 (International Fedrationof Surveyors)；综合设施XiTong (Integrated Facilities System)
5、dif───abbr.二碘荧光素（diiodofluorescein）；n.(Dif)人名；(法)迪夫
6、Fife───n.（军乐中与鼓同奏的）横笛；vi.吹横笛；vt.用横笛吹奏；n.(Fife)人名；(意、葡)菲费；(英)法伊夫
7、-ify───abbr.国际预科 (International Foundation Year)
8、kif───n.MaZui品；XiDu后的迷糊状态（等于kef）
9、inf───abbr.中程核力量 (Intermediate Nuclear Forces)
1、I'll be there if poss.───如果可能我会去那里的。
2、If that sounds like the right kind of quest for you, click here to buy the Empire Building Kit now, before orders close in just a few hours.───如果这正是你想要的探寻，那么请DianJiZheLi，订购你想要的“帝国缔造工具包”，订购几小时后就将结束。
3、I'm damned if I'll apologize!───我决不道歉！
4、You know, if Trent's such a jerk, why do you hang out with him?───如果崔特是个大烂人你干嘛跟他在一起？
5、If I were in charge...───假若由我负责…
6、"That sounds to me like a nearly ideal solution, " Joyce said. "But only if you really think it would be enough for you. "───“我觉得这几乎是个完美的解决办法，”乔伊斯说：“但除非你真的觉得这么做就可以了。”
7、I shall provide you perhaps with a further update later this day if it becomes necessary to do so.───如若必要，今天我可能会给予你们进一步的更新。
8、If you did not select the Create Outlook Task check box, Access saves the import specification and imports the objects that you specified.───如果未选中“创建Outlook任务”复选框，则Access会保存导入规范，并导入指定的对象。
9、The question of nationality is sure to come up again if Strauss-Kahn steps down, but Europeans will not be eager to part with the position.───如果斯特劳斯卡恩辞职，国籍问题就会再次出现，但是欧洲人并不急着放弃这个职位。