Now, consider a rule 150 CA that starts out with all white cells, except for a single black cell in the center.

现在，考虑一个150规则CA，开始时，除了中间的细胞为黑色，其他所有细胞都是白色。

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All the example CAs in this article start with a single black cell, so it's natural to consider this cell as the origin.

本文中所有示例CA都以一个黑色细胞开始，因此自然就以这个细胞为原点。

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In this square, you can see that if a cell is white, its left neighbor black, and its right neighbor white, then that cell will be black in the next step.

在这个方块中，可以看到如果细胞是白色的，它的左邻是黑色的，右邻是白色的，那么这个细胞在下一步将是黑色的。

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Black people in Africa are the huge majority of those with sickle cell disease.

VOA: special.2009.12.16

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