Depending on how the tool is used, characteristic chip page patterns and microscopically distinguishable polishes develop near the edges.

特有的碎片掉落后的样子，和非常（显微镜下才可观察的）光滑的平面出现在边缘的部分，当然这种状况完全取决于你怎样来使用工具。

So it sometimes will get the right answer using secondary characteristics, which is exactly what we're trying to explain.

- 因此， 它有时会使用次要特征得到正确的答案，这正是我们试图解释的。

When we say 'the … one', we describe a person by using a particular and prominent characteristic they have. If you're very tall, you might be 'the tall one'.

当我们说“the … one”时，我们用一个人所具有的特定且突出的特征来描述一个人。如果你很高，你可能是“the tall one”。

Then, she's going to tell us how she used those personal characteristics or why those personal characteristics were important in the jobs that she's already done.

然后，她将告诉我们她如何使用这些个人特征， 或者为什么这些个人特征在她已经完成的工作中很重要。

In geometry, for example, when we wish to prove something about all triangles, we draw a particular triangle and reason about it, taking care not to use any characteristic which it does not share with other triangles.

例如，在几何学中，当我们想证明所有三角形的某些东西时，我们会画出一个特定的三角形并对其进行推理，注意不要使用它与其他三角形不共享的任何特征。