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铁路路标 : 53 phrases in 11 subjects |
Bridge construction | 8 |
Business | 1 |
Commerce | 1 |
Communications | 2 |
Explosives and Explosive Ordnance Disposal | 1 |
International trade | 1 |
Metallurgy | 1 |
Rail transport | 1 |
Space | 1 |
Technology | 35 |
Textile industry | 1 |