“介质”间互不交叉的踪迹最终物化成非线性铝条，其长度等于“介质”。
The non-intersecting trails of the "agents" are eventually materialized into non-linear aluminum stripes, of length equivalent to the "agents"' lives.
在不得不交叉线时，我会用适用于电路图的标准来标记：一条线“跳过”另一条，如图4所示。
When I am forced to have crossed lines, I will notate it using the standard applied on electrical-wiring diagrams: one line is drawn "hopping over" another one, as in Figure 4.
两人坐一会儿然后挪动，交叉不交叉腿，读一本书产，在笔记本上记笔记或者一个人坐在一张长凳上做可以做的任何其他的事。
Both sit for a while, and shift, crossing and uncrossing legs, reading a book, writing in a notebook, or anything else one might do on a bench.
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