drainage
举一反三
- Can natural rubber be used in irrigation and drainage hoses？
- The Missouri drainage area covers one-sixth of the entire United States.
- What is the unique system of underwater irrigation and drainage in Xinjiang Province?
- The __________ system here, including a water-closet, is of the mostcomplete and modern kind. A: climate B: topographical C: water D: drainage
- Please find the word that is equivalent to the definition.fit for drinking（） A: sewage B: vegetation C: potable D: drainage E: waterlogged F: sedimentG．habitatH．erosion