N-COUNT
边缘；周围；外围
If something is on the periphery of an area, place, or thing, it is on the edge of it.
例句
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。
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。