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| 燃料消耗检查; 燃料经济性试验 | |||
| 对经济效果的估计 (或评价) | |||
| 经济效果评价; 对经济效果的评价 | |||
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economy test : 6 phrases in 3 subjects |
| Automobiles | 4 |
| Ecology | 1 |
| Technology | 1 |
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