The cough is just dry cough, but very persistent, nothing seems to work.

这个咳嗽是一种干咳，但是就是一直治不好，什么药都没什么疗效。

youdao

The cough is just dry cough, but very persistent, nothing seems to work.

这个咳嗽是一种干咳，但是就是一直治不好，什么药都没什么疗效。

youdao