Astronomers theorize that a black hole forms when a massive object shrinks catastrophically under its own gravity, leaving only a gravitational field so strong that nothing escapes it.

天文学家的理论是，当一个巨大的物体在其自身的引力作用下灾难性地收缩，只留下一个强大的引力场，且没有任何东西能逃脱时，黑洞就形成了。

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When you add a listener to an object, you're creating a direct, strong association between the widget and your listener (see Figure 2).

当您向一个对象添加侦听器时，您是在小部件和侦听器之间创建了一个直接的、牢固的关联(参看图2)。

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You must remember that to make use of these classes you cannot maintain a strong reference to the object.

您必须记住，要使用这些类，您就不能保留对对象的强引用。

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You object so strong to this proposal that your group has launched a boycott, which I want to talk about in a moment.

NPR: Ill. Town Uses Police Force to Address Immigration

And you've written quite a lot about this because you think that one of the underlying arguments of the people who object to that is that family ties, strong family ties are one of the great assets of the immigrant population.

NPR: Immigration Bill Collapses, Debate Continues

Because he's strong and because he's effective, they make him be object of their political action.

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