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| 流水作用 | |||
| 河成［作用］ | |||
| 河流作用 | |||
| 河成作用 | |||
| 河流活动; 河川作用; 河川活动; 成河作用 | |||
| fluviation: 2 phrases in 2 subjects |
| General | 1 |
| Rail transport | 1 |
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