温室气体 wēnshìqìtǐ greenhouse gas Origin Definitions Defs Strokes Stroke Words Sentences Sents 温室 溫室 wēnshì noun greenhouse A building designed to maintain warmth for the cultivation of plants throughout the year; hothouse气体 氣體 qìtǐ noun gas gas; gaseous substance; a physical state of matter that has no fixed shape or volume