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| 隧道掘进孔 | |||
| 挖掘隧道的人; 隧洞掘进机 | |||
| 隧道工人; 掘进机; 隧道掘进机 | |||
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tunneller : 7 phrases in 3 subjects |
| Chemistry | 1 |
| Engineering geology | 1 |
| Technology | 5 |
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