Doctors can perform a quick breathing test with a machine called a spirometer that can help diagnose C.O.P.D. 医生可以用一种叫做肺活量计的仪器来做快速的呼吸检测来诊断是否患有慢性肺炎。
It tests the capacity of your lungs, heart, circulatory system and muscles and is considered the most accurate gauge of aerobic fitness. 它测量你肺活量，心脏，循环系统和肌肉的能力，被认为是最为精确的有氧体能测试。
