time zone

time-zone的词性：
n.（名词）

1. Any of the 24 longitudinal divisions of Earth's surface in which a standard time is kept, the primary division being that bisected by the Greenwich meridian. Each zone is 15⁼ of longitude in width, with local variations, and observes a clock time one hour earlier than the zone immediately to the east.
时区：地球表面按经度划分的24个经区，实行标准时间的区域中的任何一个。第一个时区被格林威治子午线分成两半，每个时区跨15个经度，根据各地情况有所不同。每个时区所遵循的钟表时间比紧靠该时区东面的时区要早一个小时