Online companies like Expedia ( expe ) , Priceline ( PCLN ) and even Ctrip ( CTRP ) are primarily offline agency models that went online without fundamentally changing how they approach the business .
Expedia、Priceline（PCLN），甚至携程（Ctrip）等网站都主要采取线下旅行社模式，上网没有对他们的业务经营方式产生根本性的改变。
ctrp