克雷·奥拉做了很多，包括混合回收到它的黑色蜡笔蜡笔所有颜色的缺陷。
Crayola does a lot of recycling, including mixing all colors of defective crayons into its black crayons.
但现在想象一下那个小小的句号在渐渐扩大，它的黑色部分占据页面越来越多的地方。
But now imagine that little period growing, its blackness consuming more and more of the page.
这种新的折叠池塘壳牌的所有优点，它的黑色预制的前任，但无论是池塘和小溪样子坚如磐石。
This new folding pond shell has all the benefits of its black preformed predecessor, but both the pond and the streamlet look like rock.
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