Step 6: Assemble the new drain

步骤6：组装新的排水管

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So the first obvious step for this model is to assemble the two lower halves.

因此，首先明显的一步，这个模型是装配两个较低的边。

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It's an opening step for China's plan to assemble a space station.

此次行走为中国计划装配空间基站迈出了第一步。

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It's an opening step for China's plan to assemble a space station.

此次行走为中国计划装配空间基站迈出了第一步。

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