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单词 air hole
释义

WordReference Random House Unabridged Dictionary of American English © 2024
air hole′, 
    1. an opening to admit or discharge air.
    2. a natural opening in the frozen surface of a river or pond.
    3. AeronauticsSee air pocket. 
    • 1760–70

Collins Concise English Dictionary © HarperCollins Publishers::
air hole n
  1. a hole that allows the passage of air, esp for ventilation
  2. a section of open water in a frozen surface
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