To demonstrate how to use the data-exploration tool, I will use data from a hypothetical fire damage study.

为了演示如何使用数据研究工具，我将使用来自假想的火灾损失研究的数据。

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A pencil is a good tool. You can use a pencil to make annotations in the margins of your text without doing any permanent damage to the text.

铅笔是一个好的工具。你可以用铅笔在文章边缘做注释，就不会对文本造成任何不可复原的毁坏。

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Never carry a tool by the cord or hose, as you may damage both and loosen the connection to the tool.

切勿通过拉扯线缆或软管来移动工具，否则可能会损坏线缆或软管，并且使其与工具的连接松脱。

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He cautions that optic nerve damage can point to a number of diseases and is not a unique diagnostic tool for MS. However, he says, it certainly sends up a flag suggesting that MS might be present.

CNN: Can an eye exam detect multiple sclerosis?

Scientists need to be sure that when the big hammer tool turns in a rock it breaks the surface into a useable powder that will not clog or damage the sample handling mechanism.

BBC: Curiosity Mars rover deploys its rock brush