从概念上讲，电子商务与众所周知的商业服务并无不同，后者的服务包括像电话银行、“邮购”目录，或通过传真向供应商发送采购订单等。
Conceptually, e-commerce does not differ from well-known commercial offerings such as banking by phone, "mail order" catalogs, or sending a purchase order to supplier via fax.
查找与业务实体关联的商业服务。
Find the business services associated with the business entity.
宇航局及承包商更喜欢地比较的是邮政服务与商业航空。
The comparison NASA and its contractors prefer is that of the postal service and commercial airlines.
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