Drainage ditch refers to the ditch that leads the water collected from the side ditch, intercepting ditch and low-lying place near the subgrade to the outside of the subgrade. ?

2. Definition of nouns:

Chinese name: Drainage ditch?

English name: drainage ditch; Drainage; Sewer?

Definition: a ditch or culvert used to drain excess water on the ground or underground. ?

Applied discipline: water conservancy science and technology (first-class discipline); Irrigation and drainage (two disciplines); Farmland drainage (two majors)