钚、铯以及锶本身就是有限资源，如果裂变反应堆技术先进到一定程度，它们又会成为燃料。
Plutonium, cesium and strontium are also limited resources, and if fissionreactor technology advances enough, they could become fuel sources themselves.
如果现场电源失效，对反应堆冷却系统的控制是非常有限的。
If all AC power is lost, the options to cool the core are limited.
每个人所拥有的财富都是有限的，你可以选择买一大堆的劣质产品，也可以选择买少量的高质量产品。
Every person has a finite amount of money. Either you can buy lots of crappy stuff or you can buy a few very nice things.
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