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| clear-vision distance; visual range | |||
| optic distance; optical distance; range of visibility | |||
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| visible distance | |||
| 可见距离: 10 phrases in 5 subjects |
| Automobiles | 1 |
| Aviation | 1 |
| General | 1 |
| Oil / petroleum | 1 |
| Technology | 6 |
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