Read Edit View history 上面级 shàngmiànjí upper stage Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 上面级/上面級 · shàngmiànjí · upper stage 2026/03/04 上面级 / 上面級 shàngmiànjí upper stage the upper stage of a multi-stage rocket 这枚火箭的上面级成功地将卫星送入了预定轨道。 noun created sense Mar 4, 2026, 02:25 AM