煤层气

• 火(fire)RADICAL
• 某(something; a certain thing)PHONETIC

Coal is a fuel extracted from the earth's interior that burns into fire.

• 尸(corpse; roof (covering))RADICAL
• 云(cloud)PHONETIC

Layers of houses stacked on top of each other like tiered clouds beneath a roof.

• 气(vapor; gas; steam)ASSOCIATIVE

The character depicts wisps of vapor rising upward, symbolizing invisible atmospheric air.