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| 石阶 | |||
| 石砌踏步; 石砌台阶; 石梯级 | |||
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| 石级; 石阶; 石砌台阶 | |||
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stone step : 10 phrases in 4 subjects |
| Architecture | 3 |
| Electronics | 2 |
| Metallurgy | 1 |
| Technology | 4 |
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