 |
| Chinese | English |
| 沟壑侵蚀 | ravine erosion |
| 沟渠 | ditch A long, narrow excavation artificially dug in the ground; especially an open and usually unpaved waterway, channel, or trench for conveying water for drainage or irrigation, and usually smaller than a canal. Some ditches may be natural watercourses (地面上由人工挖掘的又长又窄的沟；尤其指开口的、不铺砖的水路、水道或沟渠，用于排水或灌溉，通常比运河小，有些渠可以是天然的水道。) |