单词	heads-up display
释义	heads-up display noun plural heads-up displays : a system that projects information onto a usually transparent surface that sits directly in a user's line of vision The "heads-up display," or "HUD," projects an image of the speedometer, fuel gauges and other controls onto the windshield, so that a motorist could read them without looking away from the road. Warren Brown … helping to develop flight simulators and heads-up display helmets that let airplane pilots see gauges and flight data without having to look down at the instrument panel … Sabra Chartrand —abbreviation HUD Word History First Known Use 1964, in the meaning defined above
随便看	underpick underpin underpinned underpinner underpinning underpinnings underpins underpitch underplant underplanted underplanting underplants underplay underplayed underplaying underplays underplot underplots underpole underpopulated underpopulation underpower relay underpowered underpraise underpraised

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