Here are some examples:
* Aproveite a sua viagem! (Enjoy your trip!)
* Espero que aproveite o jantar. (I hope you enjoy the dinner.)
* Aproveite o dia! (Enjoy the day!)
However, depending on the context, there are other options:
* Gostar: This means "to like" and can be used to say "enjoy" in some contexts. For example, "Gostaria de aproveitar esta oportunidade" (I would like to take advantage of this opportunity).
* Desfrutar: This means "to relish" or "to savor" and implies a more intense experience of enjoyment. For example, "Desfrute da vista!" (Enjoy the view!)
Ultimately, the best way to say "enjoy" in Portuguese will depend on the specific situation.