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 your tummy still sore?入侵部队; 侵略军
Is it an optician's shop?[医] 退化性囊肿
Is the station clock accurate火车站的表准吗?
Is Mr Chan expecting you?渐开线样板
Is the beauty a drunkard?渐开线齿轮
ischemia-repcrfusion injury缺血再灌注损伤
Ischemic mitral regurgitation缺血性二尖瓣反流