UFO
noun[C]
uk/ˌjuː.efˈəʊ/us/ˌjuː.efˈoʊ/abbreviationforunidentifiedflyingobject: anobjectseenin theskythat isthoughtto be aspacecraftfrom anotherplanet:
不明飞行物，飞碟，幽浮（unidentified flying object的缩写）Several UFOsightingshave beenreported.已接到了数起发现不明飞行物的报告。
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Space travel
- aerospace
- astronautics
- autopilot
- biosatellite
- blast
- capsule
- earthbound
- EVA
- intergalactic
- jetpack
- launcher
- nose cone
- shuttle
- space capsule
- space probe
- space shuttle
- space tourism
- space tourist
- spacefarer
- spaceman