ISBL信息系统基础语言isv.是（be的第三人称单数一般现在时）ischemia-reperfusion injury缺血再灌注损伤Is this your first order?长披风,无袖长外套Is the hostage still alive.人质还活着吗?Is this somebody rs seat?adv.精力充沛地ischemic contracture of heart心脏缺血性挛缩Is in the airline business.国泰航空公司。Is this our compartment ?抗毁性Is there any coffee left?库存模型Is six o'clock all right?渐开角is lowered slightly each time林波舞一种西印度群岛的舞蹈，舞者须向后仰并穿过一支水平杆，每次都要比前一次仰得更低