| 1. | Sediment begins to choke the channel's opening .
沉积物开始淤塞河道口。 |
| 2. | Ahead there was a ditch running into the river .
前头有条通向河道的水沟。 |
| 3. | The depth of the river is maintained by dredging .
通过疏浚保持河道的深度。 |
| 4. | The river is silted up and the water flows sluggishly .
河道淤塞，水流迟滞。 |
| 5. | The channels are closely spaced or widely spaced .
河道是紧密相间的或是稀疏相间的。 |
| 6. | The river is blocked up with ice .
河道被冰块叉住了。 |
| 7. | The river is blocked up with ice .
河道被冰块堵塞。 |
| 8. | The subsidiary channels have a thickness in the range 6-12 m .
次要河道的厚度为6-12米。 |
| 9. | Temporary supports would have impeded navigation in the channel .
临时支架将妨碍河道航运。 |
| 10. | The riverbed is silted up , so there 's no outlet for the floodwater .
河道淤塞，洪水无出路。 |
