while walking
Se encontró de casualidad con su viejo amigo mientras caminaba por el parque.
He ran into his old friend by chance while walking through the park.
Leía un libro mientras caminaba.
I was reading a book while walking.
El viento frío le cortaba la cara mientras caminaba hacia la estación.
The cold wind cut into his face as he walked towards the station.
Tom silbaba una melodía mientras caminaba por el río.
Tom whistled a tune as he walked along the river.
Él se cruzó con su viejo amigo mientras caminaba por el parque.
He ran into his old friend while walking through the park.
She spoke as she walked.
Ella hablaba mientras caminaba.
She talked as she walked.
Él se perdió mientras caminaba por el bosque.
He got lost while walking through the forest.
Mientras caminaba una repentina gota de orina le cayó por la pierna.
As he was walking, a sudden drop of urine fell down his leg.
— It's Such a Beautiful Day (2012)
El niño contaba sus pasos mientras caminaba.
The boy counted his steps as he walked.