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| 铺砌片石; 铺砌石料 | |||
| 手铺砌石 (块) | |||
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| 琢石; 松脂岩 | |||
| pitching stone: 30 phrases in 5 subjects |
| Bridge construction | 3 |
| Desert science | 1 |
| Engineering geology | 5 |
| Hydroelectric power stations | 2 |
| Technology | 19 |
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