英汉词典

1. 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.

    e.g. ...the Grand Union Canal.
           大联盟运河
    e.g. ...Venetian canals and bridges.
           威尼斯水道和桥梁

2. (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.

    e.g. ...delaying the food's progress through the alimentary canal.
           延缓食物通过消化道