ابحث
subterranean
01
existing, operating, or happening in secrecy or obscurity
02
situated, occurring, or existing beneath the surface of the earth
مثال
The subterranean river flows silently beneath the ground.
The subterranean tunnels were used for secret military operations during the war.
She explores the subterranean caves to study geological formations.
Our city has a network of subterranean passages used for utilities.
Some caves are home to unique ecosystems, with specialized plants and animals adapted to the dark, subterranean environment.
