单词	unmanned
释义	English American unmannedadjective uk/ʌnˈmænd/us/ʌnˈmænd/ used to refer to a spacecraft, or a place where military guards work, that has no people present to operate or be in charge of it: an unmanned mission to the planet Mars Thesaurus: synonyms and related words Space travel astronaut astronautics autopilot blast command module cosmonaut earthbound flyby heat shield launch pad moon buggy NASA retrorocket rocket rocket science rocket ship spaceman touchdown tracking station UFO See more results » You can also find related words, phrases, and synonyms in the topics: Places involved in military activity unmannedadjective [ not gradable ] us/ʌnˈmænd/ not having or not needing people to operate or work correctly: Both designs represent a new generation of unmanned aircraft, which began in the 1990s with robotic spy planes.
随便看	discount window discounted discounted bill discounted bond discounted cash flow discounter discounting discourage discouraged discouragement discouraging discouraging discourse discourteous discourtesy discover discoverability discoverable discoverer discovery discredit discredit discreditable discreditably discreet