sadon.茶道sadadj.悲哀的；忧愁的；伤心的Sadazane贞实Sadohara佐土原Sadatora贞虎(名,日本)Sadakane定金Sadakari贞苅(姓,日本)Sadanobu定延(姓,日本)Sadatomi定美sad loss悲惨的损失／伤亡Sadatami定民(名,日本)Sadamasu贞倍