var xamsi lujvo

x₁ is the atmosphere of planet x₂=v₂ (default Earth) of composition v₃.

In notes:

xamsi: x₁ is a sea/ocean/gulf/[atmosphere] of planet x₂, of fluid x₃; (adjective:) x₁ is marine.
varxasyske: s₁ is the atmospheric science of planet x2.