sphere
US /sfɪr/
UK /sfɪr/

1.
2.
sphère, domaine, champ
an area of activity, interest, or expertise
:
•
He is an expert in the sphere of international relations.
Il est un expert dans la sphère des relations internationales.
•
Her influence extends beyond her immediate sphere.
Son influence s'étend au-delà de sa sphère immédiate.