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| index of activity | |||
| activity index | |||
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活动指 数 : 12 phrases in 9 subjects |
| Business | 3 |
| Desert science | 1 |
| Economy | 1 |
| Finances | 1 |
| Food service and catering | 1 |
| Labor law | 1 |
| Space | 2 |
| Statistics | 1 |
| Technology | 1 |
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