Do you often get short of breath?

你经常感到气短吗？

He couldn’t walk far without getting short of breath.

【short，shortness】他路走长了就会气喘吁吁。

He... He got short of breath.

呼吸急促。

He was like, yeah, I feel really tired, it's hard to walk around, I get short of breath when I walk up and down the steps and stuff like that.

他说，是的，我真的很累，走来走去很困难，当我走上走下台阶之类的时候，我感到呼吸急促。