ISRC=International Standard Recording Code 国际标准记录码(ISO)isv.是（be的第三人称单数一般现在时）Is your journey really necessary?.Is his business strictly legitimate?Is slope indicator properly mounted?Is Tarski a Correspondence Theorist?ISFC Indicated Specific Fuel Consumption指示比油耗Is caloric restriction the solution?Is it a station-to-station call?Is menstruation came behindhand how?Is there a bond/security deposit?Is different from systematic theology.系统神学。