"Someone could attack the industrial control systems that control all the valves, all the distribution systems, and are used to turn on and off various aspects involved with energy and the electrical power grid and oil and gas distribution networks,".

VOA: standard.2009.08.11

I could use any example but I'm going to use something which plainly does move around among various semiotic systems.

这个例子很平凡,随处可见。

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