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person-day | |||
activity day |
活 动 日 : 31 phrases in 15 subjects |
Agriculture | 2 |
Aviation | 4 |
Business | 1 |
Commerce | 1 |
Earth sciences | 1 |
Economy | 1 |
Environment | 1 |
Exhibitions | 2 |
Finances | 2 |
Information technology | 2 |
Name of organization | 2 |
Securities | 1 |
Space | 5 |
Sports | 4 |
Technology | 2 |