日本海寒帯気団収束帯にほんかいかんたいきだんしゅうそくたいnihonkaikantaikidanshuusokutainounJapan-Sea Polar-Airmass Convergence ZoneJPCZKanji in this word収income団group寒cold帯sash日day本book束bundle気spirit海seaStudy it in Yanamino