respiratory pump

例句：

1. 1. The respiratory pump is used to help people breathe when they are unable to do so ontheir own.
   呼吸泵用于帮助那些无法自己呼吸的人。
2. 2. The respiratory pump was designed to improve the efficiency of ventilation systems.
   呼吸泵被设计用来提高通风系统的效率。
3. 3. The respiratory pump was found to be effective in treating patients with severe asthma.
   研究发现呼吸泵对治疗严重哮喘患者有效。