|
41. | sea-going dredge |
| 海洋挖掘船 |
|
|
| |
42. | Excavate an archaeological site. |
| 挖掘考古现场 |
|
|
| |
43. | belled excavation |
| 钟形挖掘 |
|
|
| |
44. | depth of vertically digging |
| 垂直挖掘深度 |
|
|
| |
45. | complete set of hydraulic excavator |
| 水力挖掘机组 |
|
|
| |
46. | continuous bucket dredge |
| 多斗挖掘船 |
|
|
| |
47. | braced excavation |
| 支撑式挖掘 |
|
|
| |
48. | dredge stripping |
| 挖掘船剥离 |
|
|
| |
49. | bench excavation |
| 台阶式挖掘 |
|
|
| |
50. | dig with a pick |
| 用镐挖掘 |
|
|
| |