为了对数量进行精准的估计，研究人员不能只根据照片的数量进行核算，因为相机很有可能是由其他的动物引发传感器而发生的，比如猴子或者豹。

To arrive at a population estimate, the researchers can't just count the number of photographs, because the cameras are triggered by all sorts of things, like monkeys or leopards.

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科学家估计柯伊伯带很有可能存在有几万个大小超过60英里(100公里)的冰矮天体，还有数量在万亿以上的彗星。

Scientists estimate the Kuiper belt is likely home to hundreds of thousands of icy bodies larger than 60 miles (100 km) wide, as well as an estimated trillion or more comets.

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如果你是个IT老手，这些所说的估计你大部分都遇到过，而且很有可能还有自己的心得—当然，非常欢迎你花几秒钟的时间把你的所知道的其它小秘密添加到本文的讨论中。

If you are an IT veteran, you've probably encountered most of these issues and have a few of your own to add - and please, by all means, take a moment to add them to the discussion.

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