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| 上游; 上流 | |||
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| 上升流 | |||
| 上游 | |||
| 上游程序指石油勘探、开采程序 | |||
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| 逆流; 向上游 | |||
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up-stream cycle : 9 phrases in 5 subjects |
| Bridge construction | 2 |
| Construction | 1 |
| Metallurgy | 3 |
| Submarines | 1 |
| Technology | 2 |
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