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caterpillar | |||
chain track; endless track; track | |||
caterpillar track |
链轨: 50 phrases in 12 subjects |
Agriculture | 10 |
Animal husbandry | 2 |
Athletics | 3 |
Automobiles | 1 |
Aviation | 1 |
Drilling | 1 |
General | 4 |
Mechanic engineering | 1 |
Metallurgy | 1 |
Space | 5 |
Technology | 20 |
Textile industry | 1 |