 |
| |||
| interstellar travel | |||
| interplanetary and interstellar flight; interplanetary and interstellar navigation; astronautics; interplanetary & interstellar navigation | |||
| astronavigation; interplanetary navigation | |||
| |||
| interstellar navigation | |||
| |||
| interstellar travel | |||
| |||
| interstellar travel | |||
| 星际航行: 22 phrases in 5 subjects |
| Aviation | 1 |
| Aviation medicine | 1 |
| Earth sciences | 1 |
| General | 6 |
| Space | 13 |