And like detectives, epidemiologists have their own tools of the trade, starting with standard terminology.

和侦探一样，流行病学家也有自己的工具——标准术语。

Standard terminology means that whatever the circumstances of an outbreak and wherever in the world they happen, epidemiologists have a common language for talking about them.

标准术语意味着，无论疫情爆发的环境如何，无论发生在世界的哪个地方，流行病学家都有一种共同的语言来谈论它们。

Notice this means the matrix encoding our transformation has three rows and two columns, which, to use standard terminology, makes it a three by two matrix.

注意 这意味着编码变换的矩阵有三行两列 用标准术语来说 就是一个3×2矩阵。