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 there a tourist guide?渐开线拉刀Is Lambert a wild animal?渐开线齿轮Is Guo Peng your brother?渐开线铣刀Is your friend available?内旋的贝壳Is the a slaughter abode?招标Is this your beloved son?殷钢波导Is not the traffic heavy?不变凸函数Is anyone getting hungry?渐开线花键Is your name Ben Johnson?adj.不随意运动的Is it anything like mine?内翻缝合法