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| вогнутая линия | |||
| углубление | |||
| паз; голькель; желобок | |||
| 凹 线: 32 phrases in 6 subjects |
| Construction | 2 |
| Electronics | 1 |
| General | 15 |
| Mathematics | 2 |
| Nautical | 1 |
| Technology | 11 |
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