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单词 canal
释义 canal
n.
  1. an artificial waterway for inland navigation or irrigation.
  2. any of various tubular ducts in a plant or animal, for carrying food, liquid, or air.
  3. Astron. any of a network of apparent linear markings on the planet Mars, which are observed from earth but not at close range.
Phrases and idioms
canal boat a long narrow boat for use on canals. canal ray a beam of positive ions moving through a bored hole in the cathode of a high-vacuum tube.
Etymology: ME f. OF (earlier chanel) f. L canalis or It. canale
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