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1. Oxford Dictionary

   rotary engine

   • n.
     an engine which produces rotary motion or which has a rotating part or parts.；an aircraft engine with a fixed crankshaft around which cylinders and propeller rotate.

   • noun: rotary engine, plural noun: rotary engines

2. • 釋義

   n.

   名詞

   • 1. an engine which produces rotary motion or which has a rotating part or parts.
   • ▪ an aircraft engine with a fixed crankshaft around which cylinders and propeller rotate.
   • ▪ a Wankel engine.