圏 - sphere, circle, radius

Arctic Circle; the Arctic

stratosphere

inside (a region, area, etc.); within the range (of); within the sphere (of influence, etc.)

outside (a region, area, etc.); out of range (of a mobile network, radar, etc.); outside the sphere (of influence, etc.); out of contention; out of reach

Greater Tokyo Metropolitan area

one's daily milieu; neighbourhood; neighborhood; zone of life; sphere of life

sphere (e.g. of knowledge, influence)

thermosphere

(having a) good chance of being elected; being in the running

magnetosphere

atmospheric nuclear test

eurozone; euro zone; euro area