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| 开发和设计 | |||
| 发展与设计 | |||
| 开发与设计 | |||
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development and design : 18 phrases in 6 subjects |
| Aviation | 8 |
| Business | 1 |
| Earth sciences | 1 |
| Ecology | 2 |
| Space | 5 |
| United Nations | 1 |
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