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| вогнутый; вдавленный; впалый | |||
| 下 凹: 30 phrases in 8 subjects |
| Electronics | 2 |
| General | 8 |
| Mathematics | 2 |
| Medical | 3 |
| Military | 1 |
| Oil processing plants | 2 |
| Politics | 1 |
| Technology | 11 |
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