Several other French, Dutch and British firms are using footpower to keep the lights on.
法国、荷兰与英国的其他一些公司也正在设法借助脚部产生的能量让灯泡发光。
2
It is footpower, even from the most basic principles of physics in the universe - molecular attraction.
它脚底的力量，竟然来自宇宙中最基本的物理学原理——分子引力。
3
When it's spinning parallel to the ground, support your weight on your left foot and use your right foot to power your spin; the momentum of the hoop should carry you around.