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| 年度平均费用成本; 年度平均费用 | |||
| 年平均费用 | |||
| 平均年费用; 年平均消耗 | |||
| 平均年度费用 | |||
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average annual cost : 2 phrases in 2 subjects |
| Earth sciences | 1 |
| Technology | 1 |
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