観測気球 かんそくききゅう weather balloon; sounding balloon n observation balloon; espionage balloon; spy balloon n trial balloon n Advanced ➥
六気 ろっき りっき りくき yin, yang, wind, rain, darkness, light n cold, heat, dryness, dampness, wind, fire n six emotions (joy, anger, sorrow, pleasure, love, hate) n Advanced ➥
四気 しき weather of the four seasons (warmth of spring, heat of summer, cool of autumn, and cold of winter) n Advanced ➥