ISBL信息系统基础语言isv.是（be的第三人称单数一般现在时）Is such a thing possible?渐开线齿轮Is the cut still painful?伤口还在痛吗Is also an urgent transfer.又是一次紧急转移。Ischemic-reperfusion injury缺血再灌注损伤ischemia/repedusion injury缺血／再灌注损伤Is there a bus timetable?对合环Is there an extra charge?牙中牙Is there a dressing room?[医] 退化型Is this an ethical ideal?静词谓语ischemic enteropathy syndrome缺血性肠病综合征