cosmonaut
n.
1959, Englishing of Russian kosmonavt, ultimately from Greek kosmos (see cosmos) + nautes "sailor" (see naval).
〔李〕[cosm;-o-;naut] n.宇航员 ←cosm (GK cosmos)=world, universe 世界，宇宙
〔李〕n.宇航员 [naut=sailor] ←cosmo-[GK] =world世界；universe宇宙
〔蒋〕[cosmo宇宙，naut船→航行者] 宇宙航行员