Attaching radio devices to it is difficult, and visual sightings are too unreliable to give real insight into its behavior.

给它安装无线电设备是很困难的，而且仅凭肉眼观测也太不可靠，无法对它的行为进行确切的观察。

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But so far, he said, it is too early to apply his model to the real stock market because of its complexity.

不过到目前为止，他说，由于这个模型的复杂性，还无法把他的模型应用到真正的股票市场。

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That's how it is in real life too. But most teens who go through a divorce learn (sometimes to their surprise) that they can make it through this difficult situation successfully.

现实生活也是如此，但是多数经历过父母离婚的十几岁的孩子都发现（有时连他们自己都感到吃惊），他们可以从这个困境中成功地走出来。

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For soldiers in combat it is only too real.

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And Boards have been reluctant, or unclear as to how, to weigh in until it is far too late and real damage has been done.

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It is a real cost too!!!

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