 |
two-course
| concrete floor
| two-course | |
| hydroel.st. | 双层的 |
| concrete floor | |
| anim.husb. | 水泥地面 |
| eng.geol. | 混凝土楼板 |
| hydroel.st. | 混凝土底板 |
| |||
| 双层的 | |||
| 双程的 | |||
| two-course: 22 phrases in 7 subjects |
| Agriculture | 2 |
| Air defense | 2 |
| Animal husbandry | 1 |
| Architecture | 1 |
| Space | 2 |
| Technology | 12 |
| Textile industry | 2 |
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