locomotion

Walking is the primary mode of locomotion for humans, while fish rely almost entirely on swimming.

(Chinese) 步行是人类主要的运动方式，而鱼类则几乎完全依靠游泳。

Scientists are studying the locomotion of deep-sea creatures to design more efficient underwater robots.

(Chinese) 科学家们正在研究深海生物的运动方式，以设计出更高效的水下机器人。