| |||
| 项目工程作业 | |||
|
project work : 24 phrases in 9 subjects |
| Aviation | 4 |
| China | 1 |
| Economics | 2 |
| Finances | 1 |
| Hydroelectric power stations | 6 |
| Scientific | 1 |
| Space | 1 |
| Technology | 6 |
| United Nations | 2 |
| |||
| 项目工程作业 | |||
|
project work : 24 phrases in 9 subjects |
| Aviation | 4 |
| China | 1 |
| Economics | 2 |
| Finances | 1 |
| Hydroelectric power stations | 6 |
| Scientific | 1 |
| Space | 1 |
| Technology | 6 |
| United Nations | 2 |