| 1. | They passed the dry bed of a rivulet .
他们跨过了一道干涸的河床。 |
| 2. | The creek had eroded deep into the little gully .
泾水把那狭窄的河床浸蚀得很厉害。 |
| 3. | There may be a deep cliff in the bed of a stream .
在一条河床上可能有一个陡峭的悬崖。 |
| 4. | In many instances, such bed degradation is beneficial .
在许多情况下，这种河床冲刷是有利的。 |
| 5. | The amount of fluctuation is also affected by bed configuration .
变化的幅度也受河床形状的影响。 |
| 6. | The bed of a river is partly worn away by corrosive action .
河床部分地就是被这种侵蚀作用冲蚀的。 |
| 7. | The bed of a river is partly worn away by corrosive action .
河床就是部分地被这种侵蚀作用冲蚀的。 |
| 8. | Sometimes the water spread like a sheen over the pebbly bed .
有时河水泛流在圆石子的河床上，晶莹发光。 |
| 9. | Bed material samplers, as first developed, may be divided into three types .
最初的河床质取样器有三种类型。 |
| 10. | If there is significant erosion, the stream should be recalibrated .
假若河床有严重冲蚀，流注应该重新校准。 |
