王说，除了规划主要和次级通风廊外，这个系统还包括其他小一点儿的通风廊。
In addition to the planned primary and secondary ventilation corridors, other smaller corridors will also be added to the system.
王说，除了规划主要和次级通风廊外，这个系统还包括其他小一点儿的通风廊。
In addition to the planned primary and secondary ventilation corridors, other smaller corridors will also be added to the system.
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