spacecraft是可数名词嘛
spacecraft是可数名词，复数形式是spacecrafts 或 spacecraft spacecraft 美 /ˈspeɪskræft/ 英 /ˈspeɪskrɑːft/ n. [航] 宇宙飞船，航天器 双语例句： He was the first Chinese to go to space on a spacecraft. 他是靠前个坐宇宙飞船上天的中国人。 I dream of flying in space in a spacecraft one day....