局域网就是在一个有限的地域范围内，典型的如在办公大楼或校园中，将计算机及相关外设（如打印机）用电缆进行物理连结而组成的一个系统。
A LAN is a system of computers and associated peripherals such as Printers that are physically connected by cable within a limited geographical area-typically in an office building or on a college campus.
这座矮小的房屋被四周高耸的办公大楼围困在中间。
The small house was fenced in by high office buildings.
银行和房屋建筑协会在同一座办公大楼里。
The bank and the building society are in the same office-block.
