词典释义：
each of the parts into which something is or may be divided
部分；片段。
a portion of time allocated to a particular broadcast item on radio or television
（特定广播或电视节目的）时间段。
a separate broadcast item, typically one of a number that make up a particular programme
某一时段单独播放的节目。
【语音学】 （元音、辅音的）切分成分。
【动】 体节；节。
【几何】 用线（或面）截得的部分图形，尤指：
the part of a circle enclosed between an arc and a chord
弓形。
the part of a line included between two points
线段。
the part of a sphere cut off by any plane not passing through the centre
球缺。
divide (something) into separate parts or sections
分割；划分
-
the unemployed are segmented into two groups .失业者划分为两类。
[ no obj.]divide into separate parts or sections
分割；划分
-
the market is beginning to segment into a number of well-defined categories .市场正在分化成明确的几类。
[ no obj.]
【胚】 （细胞）分裂。
"late 16th cent. （as a term in geometry）： from Latin
