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单词 air pump
释义

WordReference Random House Unabridged Dictionary of American English © 2024
air pump′, 
    1. Mechanical Engineeringan apparatus for drawing in, compressing, or exhausting air.
    2. Astronomy(caps.) the constellation Antlia.
    • 1650–60

Collins Concise English Dictionary © HarperCollins Publishers::
air pump n
  1. a device for pumping air in or out of something
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