第二: second组: group宇航员: astronaut; cosmonaut第三组宇航员: astronaut group 3第四组宇航员: astronaut group 4第五组宇航员: astronaut group 5第一组宇航员: mercury seven宇航员: astronaut ; cosmonaut ; spaceman; astronaut n. a person who travels through space in a space vehicle; astronauts; pilot astronaut; space flyer; space man; space traveller; spaceman(astronaut)第二组: second set登月宇航员: lunar astronaut (lunarnaut; lunanaut); lunarnaut机器宇航员: robonaut美国宇航员: the american astronaut农民宇航员: the astronaut farmer女宇航员: cosmonette; spacewoman日本宇航员: japanese astronauts训练宇航员: astronaut training宇航员,航天员: spaceman/astronaut宇航员高山: ko san宇航员海: cosmonaut sea宇航员列表: list of astronauts by name; list of space travelers by name宇航员之妻: astronaut's wife第二组曲: carmen suite no; l'arlesienne suite no倒下的宇航员: fallen astronaut宇航员的妻子: the astronaut's wife宇航员来旅行: spaceman came travellng