on the spot | en el acto |
on the spur of the moment | impulsivamente |
On the streets | Lahti |
on the subject of | con referencia a |
On the Town | Un día en Nueva York |
on the understanding that | con tal que |
On the Universe | Sobre la naturaleza |
on the up and up | honrado |
on the up-and-up | honrado |
on the warpath | en el sendero de guerra |
On the watch | Al acecho de |
On the Waterfront | On the Waterfront |
on the way | en camino |
on the way to | rumbo a |