Chronic obstructive pulmonary disease, or C. O. P. d., affects more than 200 million people around the world.

慢性阻塞性肺疾病(或简称C.O.P.D。)影响了全世界两亿多人的健康。

youdao

Chronic obstructive pulmonary disease, or C. O. P. d., affects more than 200 million people around the world.

慢性阻塞性肺疾病(或简称C.O.P.D。)影响了全世界两亿多人的健康。

youdao