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| blanket | |||
| ectosphere (ectosphera) | |||
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外围区 : 15 phrases in 7 subjects |
| Automobiles | 1 |
| Bridge construction | 1 |
| Construction | 1 |
| Economy | 1 |
| Electronics | 1 |
| Finances | 3 |
| Technology | 7 |
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