1N-COUNT 运河;水道;沟渠 A canal is a long, narrow stretch of water that has been made for boats to travel along or to bring water to a particular area. 运河;水道;沟渠
...the Grand Union Canal.
大联盟运河
...Venetian canals and bridges.
威尼斯水道和桥梁
2N-COUNT (人体内输送食物、空气等的)管,道 A canal is a narrow tube inside your body for carrying food, air, or other substances. (人体内输送食物、空气等的)管,道
...delaying the food's progress through the alimentary canal.