| 1 | There is a sandy bottom to dredge. | |
| 2 | The depth of the river is maintained by dredging. | |
| 3 | Authorities are dredging a channel to allow river traffic to resume. | |
| 4 | They have to dredge the canal so that ships can use it. | |
| 5 | Yu from East Jiangzhou down to the Three Gorges, Three Gorges will begin dredging project. |
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