 |
| |||
| must needs | |||
| 偏要: 9 phrases in 7 subjects |
| Aviation | 3 |
| Construction | 1 |
| Economy | 1 |
| Finances | 1 |
| Oil / petroleum | 1 |
| Space | 1 |
| Technology | 1 |
|
| |||
| must needs | |||
| 偏要: 9 phrases in 7 subjects |
| Aviation | 3 |
| Construction | 1 |
| Economy | 1 |
| Finances | 1 |
| Oil / petroleum | 1 |
| Space | 1 |
| Technology | 1 |