Finally, there's another crucial factor which determines the kinds of tests we use: speed!

最后，还有一个决定我们使用的测试类型的关键因素：速度！

You start with extensive geological surveys to  determine exactly what kind of rock's down there and where the tunnel should go.

首先要进行广泛的地质调查，以确定那里到底有什么样的岩石以及隧道应该通向何处。

And then, you've got your BuzzFeed quizzes to determine what kind of pirate, or font, or sandwich, or Harry Potter character you are, but, that, I would never take one of those seriously.

然后， 你有 BuzzFeed 测验来确定你是哪种海盗、 字体、三明治或哈利波特角色， 但是， 我永远不会认真对待其中任何一个。