ISDAn.国际中国舞蹈协会
isv.是(be的第三人称单数一般现在时)
Is there life on Mars?
Is this the right way?
is unchallenged militarily在军事上无可匹敌
isch-emia/reperfusion缺血再灌注
ischemic-preconditioning缺血预处理
Is your smile genuine?
Is crying good for you?
Isn't he just adorable?
Is Mr. Lin available?
Is this your schoolbag?