ETDabbr.估计出发时间(=estimated time of departure)ETabbr.东部时间（=Eastern Time)abbr.外星人（=extraterrestrial）etosalamide依托水杨胺ethisteronen.[生化]脱水羟基孕酮；孕烯炔醇酮；乙炔基睾丸酮ethylrubber乙基橡胶etiophyllin初卟啉合镁盐eterococcus肠球菌ethyl green乙绿,乙基绿etofuradine乙胺呋啶(镇咳药)etymologistn.语源学家etretinnate依曲替酯, 苯壬四烯酯, 银屑灵, 芳香维甲酸etheofazine氮烯乙茶(抗癌药)