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| 活动楼梯 | |||
| 自动升降梯; 自动楼梯; 自动扶梯; 可移动楼梯 | |||
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| 自动扶梯 | |||
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moving stair : 6 phrases in 2 subjects |
| Architecture | 1 |
| Technology | 5 |
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