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| 检查机油压力，油面 | |||
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oil check : 13 phrases in 8 subjects |
| Automobiles | 4 |
| Chemistry | 1 |
| Drilling | 1 |
| Oil / petroleum | 1 |
| Oil processing plants | 1 |
| Shipbuilding | 1 |
| Technology | 2 |
| Textile industry | 2 |
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