respiratory efficiency的用法和样例：
例句
- A system of physical conditioning designed to enhance circulatory and respiratory efficiency that involves vigorous, sustained exercise, such as jogging, swimming, or cycling, thereby improving the body's utilization of oxygen.
有氧健身法旨在增强循环和呼吸功效的生理调节体系，包括有力的、持久的锻炼，例如慢跑、游泳或骑自行车，从而提高肌体对氧气的利用
