visitors是什么意思,extendcross什么意思

p>sevis系统,全称为student and exchange visitors information
访问者[社科]游客[科技]参观者;访问者模式形态变化复数visitors
18th century church,whose style amazes all the visitors
cvb 定义 克利夫兰旅游局 cleveland visitors bureau
animals cute visitors dangerous sing funny giraffes leaves