发现在近床壁处存在着二次流区，它与主体流区之间进行着粒子交换。
It was found that there exists a secondary flow region nearby the wall.
重量轻和移动性体现在不同形式上，使用了不同的材料和系统，如可伸展的家具、壁床、分区等等。
Light weight and mobility have been manufactures in various forms using different materials and systems, such as extending furniture, in-wall-bed and partitions, etc.
室内没有书，没有画，两个墙洞便是他们的床，看上去就像轮船上倚壁而设的地铺一样。
There were no books or pictures, and instead of beds there were bunks, like on board ship, built into the wall.
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