He kicked so hard that his foot went straight through the door and his leg followed almost to the knee.

他踢得太用力了，以至于他的脚直接穿过了门，紧接着是他的小腿，几乎快到了膝盖。

youdao

The sport's rules require that a race walker's knees stay straight through most of the leg swing and one foot remain in contact with the ground at all times.

这项运动的规则要求竞走运动员的膝盖在大部分的腿部摆动过程中保持笔直，一只脚始终与地面保持接触。

youdao

Many incomplete skeletons were found but they included, for the first time in an archaeocyte, a complete hind leg that features a foot with three tiny toes.

发现的残骸有许多都不完整，但还包含一条完整的后腿，足部有三个小脚趾，这是原始动物骨骼中的首例。

youdao

a girl balances on one leg, holding her foot and glowering at a blushing boy, while another young couple dance in the background.

VOA: standard.2010.08.09

If the foot on the leg that is crossed on top is pointing towards you, the person is most likely engaged.

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He survived major surgery on his shattered right hind leg in May only to develop laminitis, a painful and often fatal inflammation in his left hind foot in July, a direct result of standing on that foot while the right leg healed.

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If it's not kept under control, diabetes also can cause infections that may lead to leg or foot amputations.

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