Yeah?

什么
It's the easiest, it's the least resistant,

这种方法最简单阻力最小
it's the most efficient way to move from one place to another,

这是从一处移动到另一处的最高效的方法
and its efficiency that's important.

而它的效率是很重要的
Now, how would you define efficiency here?

现在这里你会怎么来定义效率呢
How much energy did you need to expend to get from your room to here

从你们宿舍到这里需要多少能量消耗
and how can you get from your room to here

以及你们怎样在从宿舍到这里的过程中
minimizing the amount of energy that you spend?

使所耗能量最小化呢
That's the subconscious decision

你的潜意识做出了这个决定
that you make and the answer is that you walk.

而这个决定就是你用走的
What force are you overcoming when you're walking here?

在你行走的时候是在克服什么力呢
What's the force that opposes your motion?

这里什么力阻止了你的运动