 |
| |||
| entry-level system | |||
| 初 级 系统: 15 phrases in 8 subjects |
| Aviation | 5 |
| Earth sciences | 1 |
| Electronics | 1 |
| Genetics | 1 |
| Skydiving | 1 |
| Space | 3 |
| Technology | 2 |
| United States | 1 |
|
| |||
| entry-level system | |||
| 初 级 系统: 15 phrases in 8 subjects |
| Aviation | 5 |
| Earth sciences | 1 |
| Electronics | 1 |
| Genetics | 1 |
| Skydiving | 1 |
| Space | 3 |
| Technology | 2 |
| United States | 1 |