Before the race she was overweight, out of shape and could barely climb a flight of stairs without losing her breath.

在参加赛跑之前，她体重超标，身体不好，爬一级楼梯都会喘不上气。

youdao

She could not walk more than a few steps without losing her breath and getting a viselike chest pain.

NEWYORKER: The Hot Spotters

The mere fact the wide-eyed infant is able to sing easily without losing her breath is evidence enough to give her mother a sense of hope she hasn't felt since before her country was plunged into war.

CNN: Taking heart amid Syria's carnage