During each step, your brain senses you are out of balance, because fluid in your inner ear shifts, so it triggers you to put your leg forward and stop the fall.

• 在每一步的过程中，你的大脑会感知身体失去平衡，因为内耳里面的体液移动了，所以大脑会命令你向前移动腿部，止住跌倒的动作。