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| observatory | |||
| ziggurat; zikkurat; meteorological station | |||
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观象台 : 15 phrases in 7 subjects |
| Aviation | 1 |
| Earth sciences | 4 |
| Ecology | 1 |
| Nuclear and fusion power | 1 |
| Space | 1 |
| Technology | 6 |
| Wind Energy | 1 |
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