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degree of accumulation |
积累度 : 50 phrases in 15 subjects |
Air defense | 1 |
Aviation | 1 |
Bridge construction | 1 |
Business | 4 |
China | 1 |
Desert science | 2 |
Ecology | 1 |
Economy | 2 |
Electronics | 2 |
International Monetary Fund | 2 |
Metallurgy | 4 |
Mining | 1 |
Securities | 1 |
Space | 1 |
Technology | 26 |