segment
/ˈsegmənt; `sɛɡmənt/ n
1
(a) (geometry 几) part of a circle cut off by a line 弦（一直线切割圆, 在圆周内的部分）. =>illus at circle 见 circle 插图.
(b) part of sth separated or marked off from the other parts; part of sth that can be separated off in the mind 分出的或标出的一部分; 想像中可分出的一部分
She cleaned a small segment of the painting. 她把画儿上的一小部分擦乾净了.
Lines divided the area into segments. 这几条线把这个面分割成了几个部分.
2 any one of the several sections of which an orange, lemon, etc is made up （橙子、 柠檬等的）瓣
grapefruit segments 葡萄柚瓣.
segment / segˈment; sɛɡ`mɛnt/ v [I, Tn]
(cause sth to) separate into segments （将某事物）分割成弦、 部分或瓣.