| 1. | 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。 |
| 2. | 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。 |
| 3. | Ridges occur in humid regions along belts of resistant rocks .
在潮湿地区，山脊沿着耐蚀的石带发育。 |
| 4. | The present relief of more than 1000 ft was due to excavation .
现在的地形起伏超过1000是削蚀的作用造成的。 |
| 5. | Nonerodible clods are also broken down by impacts of saltating grains .
不可冲蚀的土块因跳跃颗粒的撞击也会破碎。 |
| 6. | The species has a long lifetime in the absence of etchable material .
当能刻蚀的材料不存在时，这些物种就具有较长的寿命。 |
| 7. | But during an eclipse, stars whose line of sight lies near the sun can be photographed .
但在日蚀的时候，那些在我们的视线看来处在太阳附近的恒星，却可以用照相方法摄下来。 |
| 8. | A terrible drought and famine destroyed africa's sahel, the fragile desert along the south edge of the sahara .
一场可怕的干旱与饥饿毁灭了非洲的萨赫勒地，那是沿撒哈拉南缘的易受冲蚀的沙漠地带 |
| 9. | Standard practice for microetching metals and alloys
金属和合金微蚀的标准操作规程 |
| 10. | Processes for corrosion protection of magnesium alloys
镁合金防腐蚀的工艺方法 |
