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| 21. | field ditch network |
| 田间沟网 |
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| 22. | open ditch drainage |
| 明沟排水 |
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| 23. | Border ditch irrigation |
| 畦沟灌溉 |
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| 24. | arterial drainage ditch |
| 骨干排水沟 |
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| 25. | operation in ditch |
| 沟底组装 |
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| 26. | open road ditch |
| 明路沟 |
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| 27. | Dragon Beard Ditch |
| 龙须沟 |
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| 28. | interception drain ditch |
| 截僚水沟 |
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| 29. | stride a ditch |
| 跨过沟 |
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| 30. | a drainage ditch |
| 排水沟 |
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