常见例句双语例句These stimuli often lower the resting carbon dioxide pressure (Pco2) to less than the normal level of 40mmHg and cause dyspnea, especially on mild exertion.这些刺激因素常常会使二氧化碳分压降低到正常水平下40mmHg并引起气促，尤其是。 返回 dyspnea on exertion