任务分配：制作一个钟形的肺部模型来举例说明肺吸入和呼出空气的机制。

Explore how the respiratory system enables us to breathe and facilitate gas exchange, differentiating between breathing and respiration. Discover how the diaphragm controls inhalation and exhalation through a simple model using balloons and a bell jar, enhancing understanding of lung mechanics and respiration processes.