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| 十五; 十半; 对成; 半倍 | |||
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50 : 140 phrases in 13 subjects |
| Computers | 2 |
| Electronics | 5 |
| Energy industry | 2 |
| Figure of speech | 1 |
| Finances | 1 |
| General | 119 |
| Law | 1 |
| Mathematics | 1 |
| Mechanics | 1 |
| Microsoft | 1 |
| Military | 1 |
| Religion | 2 |
| Technology | 3 |
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