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| 梯阶; 楼梯的级; 楼梯的梯级 | |||
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| 梯级; 楼梯踏步平板 | |||
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| 楼梯的级 | |||
| ступени лестницы: 15 phrases in 3 subjects |
| Construction | 3 |
| Electronics | 3 |
| General | 9 |
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