(electronics) vacuum tube

fear / tremble, shudder, shiver

automotive navigation system, satnav system

(cartography) geographic information system

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

昂大, 航太, 公太, 幸太, 孔太, 好太, 孝太, 恒太: a male given name / 晃多: a male given name

口試: oral test / 光子: photon / 講師: instructor, lecturer / 格子: lattice, grid / 甲子: beginning of the sexagenary cycle / 庚子: 37th of the sexagenary cycle / 公私: public and private things