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| 四坏球自由上垒 | |||
| 自由跳闸; 自动脱扣 | |||
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| 自动脱扣; 自动跳闸 | |||
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free- trip : 30 phrases in 9 subjects |
| Automobiles | 1 |
| Aviation | 2 |
| Construction | 1 |
| Electric machinery | 1 |
| Electronics | 12 |
| General | 1 |
| Space | 1 |
| Technology | 6 |
| Wind Energy | 5 |
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