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| 71. | deep trench excavation |
| 深沟挖掘；深沟开挖 |
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| 72. | unearth buried treasure |
| 挖掘深埋的宝藏 |
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| 73. | pipeline plough |
| 管沟挖掘犁 |
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| 74. | Dredged up bitter memories. |
| 挖掘苦涩的记忆 |
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| 75. | beet lifter and collector |
| 甜菜挖掘集运机 |
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| 76. | The mole bored underground. |
| 鼹鼠在地下挖掘. |
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| 77. | Joint Exhumation Commission |
| 挖掘遗骸联合委员会 |
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| 78. | excavating depth |
| 挖掘深度;开挖深度 |
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| 79. | excavation and footing |
| 挖掘及地脚工程 |
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| 80. | alluvial dredging |
| 砂矿挖掘船开采 |
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