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| 永久性建筑 | |||
| 永久性建筑物 | |||
| 永久性建筑 (物); 永久性结构 | |||
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permanent structure : 6 phrases in 4 subjects |
| Ecology | 1 |
| Navigation | 1 |
| Oil / petroleum | 1 |
| Technology | 3 |
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