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| 表面层 | |||
| ★ 上层 | |||
| 顶层 | |||
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| 高层 | |||
| English thesaurus | |||
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| Area above an altitude of 35 km | |||
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upper-layer : 29 phrases in 11 subjects |
| Agriculture | 4 |
| Bridge construction | 1 |
| Construction | 1 |
| Desert science | 2 |
| Earth sciences | 1 |
| Electric machinery | 2 |
| Electronics | 2 |
| Fishery fishing industry | 1 |
| Information technology | 2 |
| Space | 1 |
| Technology | 12 |