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21. | throw oneself at v. |
| 拼命讨好 |
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22. | selective excavation |
| 选择挖掘 |
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23. | excavating equipment |
| 挖掘设备 |
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24. | a buying spree |
| 拼命买东西 |
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25. | excavation deformation |
| 挖掘错动 |
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26. | digging efficiency |
| 挖掘效率 |
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27. | To dig a sap. |
| 挖掘坑道 |
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28. | excavator factor |
| 挖掘系数 |
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29. | To dig trenches |
| 挖掘堑壕 |
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30. | to dig new channels |
| 挖掘新道 |
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