海象: a walrus

理性: reason; logic; rationality

勢人: (rare) a person with power and influence

(Hachijō) elder brother

probably because ~

生物工学: biotechnology

like this, in this way, so, thus

肛門: (anatomy) anus / 校門: school gate / 黄門: "yellow gate", the name of a post in old-time / 後門: rear gate / 公門: royal gate / 港門: harbour gate / 孔門: disciple of Confucius, Confucian school

農耕: agriculture / 農功: agricultural work / 農工: agriculture and industry / 濃厚: thick, rich / 濃香: heavy odor

小歌: a type of popular song / 小唄: ditty, ballad