themselves
US /ðəmˈselvz/
UK /ðəmˈselvz/

1.
sich, sich selbst
used as the object of a verb or preposition to refer to a group of people or things previously mentioned as the subject of the clause
:
•
They bought themselves a new car.
Sie kauften sich ein neues Auto.
•
The children enjoyed themselves at the park.
Die Kinder amüsierten sich im Park.
2.
selbst
used to emphasize the subject when they are also the object of the action
:
•
They built the house themselves.
Sie bauten das Haus selbst.
•
The students organized the event themselves.
Die Studenten organisierten die Veranstaltung selbst.