n.排水沟
Canals and rivers form the inland waterways of a country. 运河和河流构成一个国家的内陆航道。
Uncharted waterways;the uncharted desert. 地图上未标记的水道;地图上未标记的沙漠
Help us restore our waterways for work &play! 帮助我们为工作与玩恢复我们的水路！
In waterways these can damage the gills of fish. 在水中还可以损害鱼类的腮。
Backward inland waterways have been improved distinctively. 内河航道落后面貌得到了明显改善。
