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连接条 : 51 phrases in 14 subjects |
Automobiles | 10 |
Aviation | 9 |
Bridge construction | 1 |
Communications | 1 |
Construction | 2 |
Drilling | 1 |
Electric machinery | 1 |
Fish farming pisciculture | 1 |
Footwear | 1 |
General | 4 |
Metallurgy | 1 |
Space | 2 |
Technology | 15 |
Textile industry | 2 |