The C-shaped back keel releases energy to make the gravity centre of a human body rapidly transferred in the transition time from touchdown to weight-bearing period.

由着地期向承重期过渡时C形后龙骨释放能量使其人体重心迅速转移。

youdao

He would simply fall over to his left, unless his body curved rightward to ensure his combined centre of gravity remained within the area defined by his feet.

ECONOMIST: Shining some light