Etzn.埃茨ETabbr.东部时间（=Eastern Time)abbr.外星人（=extraterrestrial）ethyl potassium乙基钾ethnohistoricaladj.人种史学的ethnoscientificadj.民族科学的；原始民族自然知识的ethmoidal cells[医] 筛窦, 筛房ethenoadenosine乙烯腺苷ethyl safranate藏花酸乙酯ethmoidal veins筛静脉etioallocholane雄甾烷ethnomusicologyn.人种音乐学ethyl carbomate氨基甲酸乙酯