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| 翻转机构; 转位机构指翻转犁的 | |||
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| M 被 M 绊倒 | |||
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trip-over : 13 phrases in 7 subjects |
| Aviation | 1 |
| Chemistry | 1 |
| Hydroelectric power stations | 1 |
| Mechanic engineering | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Technology | 7 |
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