it is dangerous to swim in
Es peligroso nadar en la noche.
It is dangerous to swim at night.
Creo que es peligroso nadar en este lago.
I think it’s dangerous to swim in this lake.
Es peligroso nadar en este lago.
It is dangerous to swim in this lake.
Es peligroso nadar en la laguna.
It is dangerous to swim in the lagoon.
Es peligroso nadar en ese río.
It's dangerous to swim in that river.
Pienso que es peligroso nadar en ese río.
I think it’s dangerous to swim in that river.