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anti-ribboning |
防卷: 54 phrases in 12 subjects |
Chemistry | 7 |
General | 3 |
Hydroelectric power stations | 2 |
Labor law | 1 |
Metallurgy | 1 |
Oil / petroleum | 1 |
Rail transport | 7 |
Steel production | 4 |
Technology | 23 |
Textile industry | 3 |
United Nations | 1 |
Wind Energy | 1 |