If your foot points down, you need to measure the distance between the top of your big toe and an imaginary line from the bottom of your heel.

如果你的脚底朝下，那么你需要测量你的脚后跟到你大脚趾所在垂线的最短距离。

youdao

Gauging his distance, Kostya reared back and slammed his heel against the door.

克斯特亚估量了一下距离，拱起后背，抬脚猛踹在门上。

youdao

It didn't look at shoe heel height, it looked at anatomical heel length, the distance from the back of your ankle joint to the insertion of the Achilles tendon.

他没有着眼于鞋子的高度，他考虑的是脚后跟长度的结构，从踝关节背面到跟腱的附着距离。

youdao