canal

• 名词，指为船只通行或灌溉而修建的长而窄的人工水道；也指体内的管状通道，或火星表面曾被误认为运河的模糊线状地貌。

A noun referring to a long, narrow artificial waterway for boats or irrigation, or a tubular passage in the body, or an indistinct surface feature on Mars once thought to be a channel.

1. Artificial waterwayA2formal

   A man-made channel filled with water, used for navigation, irrigation, or drainage.

   运河

   • The Panama Canal connects the Atlantic and Pacific Oceans.
   • Farmers use irrigation canals to water their crops.
   • The city is famous for its network of canals and bridges.

   同义词aqueductchannelconduitditchflumeracesluicewatercoursewaterway

2. Anatomical passageB2formalmedical

   A tubular passage or duct in the body through which fluids or other substances pass.

   管道

   • The ear canal carries sound waves to the eardrum.
   • The alimentary canal is part of the digestive system.
   • Blockages in the spinal canal can cause serious health issues.

   同义词channelductpassagetracttube