怎么在淘宝上卖香烟:英文翻译,帮帮忙.

All the cell sites are connected to a mobile telephone switching office that provides the connections from the cellular system to wired telephone and transfers calls from one cell to another as a user travels out of the cell serving one area and into another.
The cellular telephone infrastructure has primarily been used for voice transmission,but recent development of a transmission standard called cellular digital packet data(CDPD)has made it possible for he infrastructure to support two-way digital transmission.
MOBILE COMPUTING.Mobile computing refers to the use of portable computer devices in multiple locations.It occurs on radio-based networks that transmit data to and from mobile computers.Computers can be connected to the network through wired ports or through wireless connections.Mobile computing provides for many applications,including m-commerce.
Another type of mobile data network is based on a series of radio towers constructed specifically to transmit text and data.BellSouth Mobile Data and Ardis(formerly owned by IBM and Motorola) are two privately owned networks that use these media for national two-way data transmission.