peripheries

英 [pəˈrɪfəriz]

美 [pəˈrɪfəriz]

n. 边缘; 周围; 外围; 次要部分; 次要活动
periphery的复数

柯林斯词典

N-COUNT 边缘；周围；外围
If something is on theperipheryof an area, place, or thing, it is on the edge of it.
1. Geographically, the UK is on the periphery of Europe, while Paris is at the heart of the continent...
  从地理位置上讲，英国处于欧洲边缘，而巴黎却位于欧洲大陆的中心位置。
2. Taste buds are concentrated at the tip and rear of the tongue and around its periphery.
  味蕾集中于舌尖、舌根和舌头两侧。
N-COUNT （学科、兴趣的）边缘，次要部分
Theperipheryof a subject or area of interest is the part of it that is not considered to be as important or basic as the main part.
1. The sociological study of religion moved from the centre to the periphery of sociology.
  宗教的社会学研究从社会学的中心学科变成了边缘学科。