第二个棱体是悬挑的木质立方体，下方有一个露台。
The second prism is a cantilevered wooden cube, which generates a terrace underneath it.
第一个棱体由黑色金属结构组成，一端对着素混凝土主体。
The first prism consists of a black metal structure that ends on an exposed concrete staple.
下游面则由坝顶护至排水棱体，无排水棱体时则护至坝脚。
For those downstream, they protect the space from dam crest to draining prism or to dam heel in event of no prism.
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