This keeps your center of gravity directly over your base of support, which allows you to move efficiently with the least amount of fatigue and muscle strain.

这让你的重心正好在你的支撑面的正上方，让你能够更有效率的移动，同时减少了肌肉的绷紧与疲劳。

We have four layers of arch muscles and that complexity is purposeful because the foot has to function as our base of support, a mobile adapter to uneven terrain.

我们有四层足弓肌肉， 这种复杂性是有目的的， 因为脚必须充当我们的支撑基础，是不平坦地形的移动适配器。