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| 中间休息板; 楼梯平台; 全宽梯台; 半层休息板 | |||
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| 全宽梯台 | |||
| 楼梯平台; 半空间平台 | |||
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half landing : 12 phrases in 4 subjects |
| Architecture | 2 |
| Port facilities | 1 |
| Technology | 8 |
| Water resources | 1 |
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