“运河”常见的英文表达是 canal。例如:
The Suez Canal is an important artificial waterway connecting the Mediterranean Sea and the Red Sea.(苏伊士运河是连接地中海和红海的一条重要人工水道。)
The Grand Canal in China is the longest ancient canal in the world.(中国的京杭大运河是世界上最长的古代运河 。)