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| constant of permanent standard | |||
| constant standard | |||
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固定标准 : 13 phrases in 8 subjects |
| Aviation | 1 |
| Business | 3 |
| Ecology | 1 |
| Economy | 1 |
| Finances | 2 |
| Genetics | 1 |
| Technology | 3 |
| United Nations | 1 |
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