肺囊

例句：

1. 1. The lungs are the organs that filter air and remove carbon dioxide from the bloodstream.
   肺部是过滤空气和从血液中移除二氧化碳的器官。
2. 2. During sleep, the lungs expand to increase oxygen intake.
   在睡眠期间，肺部扩张以增加氧气摄入。
3. 3. Lung cancer is a serious disease that can be prevented with regular exercise and healthy lifestyle habits.
   肺癌是一种严重的疾病，可以通过定期锻炼和健康的生活方式习惯来预防。