go up the stairs
Al subir las escaleras, uno se cansa al final, no al principio.
When climbing stairs, one gets tired at the end, not at the beginning.
Arriba, arriba, hay que subir las escaleras.
Up, up, we have to go up the stairs.
Respira fuerte después de subir las escaleras corriendo.
Breathe deeply after running up the stairs.
I saw him go up the stairs.
El baño está al subir las escaleras.
The bathroom is at the top of the stairs.