space cadet (描写星际探险的电视科学幻想剧中的)年轻宇航员
space cadet[ noun ]
someone who seems unable to respond appropriately to reality (as if under the influence of some narcotic drug)
<noun.person>
Space cadet \Space cadet\, n.
a person who appears disconnected from reality, or living in
his own world; -- sometimes used of people who are under the
influence of mind-altering drugs. [derogatory]
[PJC]