平克教授在此处引用了足够的关于战争邪恶和残忍的证据，以此来告诉读者，我们天性中最坏的一面其实是冷酷可怕的制造者。

Here Professor Pinker includes enough evidence of wickedness and brutality to remind readers that the worst angels of our nature are grimly inventive creatures indeed.

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另一方面，在创建对一个对象的弱引用时，完全没有扩展referent的生命周期，只是在对象仍然存活的时候，保持另一种到达它的方法。

On the other hand, when you create a weak reference to an object, you do not extend the lifetime of the referent at all; you simply maintain an alternate way to reach it while it is still alive.

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另一方面，Helper对象始终包含在某个项中，并且对Helper的所有引用都是包含引用。

Helper objects, on the other hand, are always contained within some item, and all references to helpers are containment references.

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