cindexcosmonautics./koz-muh-naw-tiks, -not-iks/US // ˌkɒz məˈnɔ tɪks, -ˈnɒt ɪks //宇航学,宇宙航行学,宇航员,宇航Definitionsn.noun · 名词1.›astronautics, especially as applied to space flight.Level 4More words in c →