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| 铺轨机; 铺轨工人 | |||
| 铺路工; 履带式车 (辆); 养路工; 履带式拖拉机 | |||
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| 铺轨机 | |||
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track layer : 7 phrases in 2 subjects |
| Electronics | 2 |
| Technology | 5 |
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