They used a mathematical model of the leg to study the effects of heellength on long-distance running ability.
他们使用腿的数学模型研究了脚后跟长度对长跑能力的影响。
2
It didn't look at shoe heel height, it looked at anatomical heellength, 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。
3
The length of time a person can wear a heel depends on the individual - a good rule of thumb is not to wear any shoe for more than an hour after your feet start to hurt.