the outer edge of an area (Cambridge)
the outer edge of a particular area (Oxford)
بیوقوف ,احمق
Houses have been built on the periphery of the factory site. (Cambridge).
The condition makes it difficult for patients to see objects at the periphery of their vision. (Oxford)
the periphery of the factory site
the periphery of their vision
Verge
Brink
Perimeter
Center
Middle
Peripherally
Peripheral