themselves
US /ðəmˈselvz/
UK /ðəmˈselvz/

1.
себя, сами
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.
Они купили себе новую машину.
•
The children enjoyed themselves at the park.
Дети хорошо провели время сами в парке.
2.
сами, самостоятельно
used to emphasize the subject when they are also the object of the action
:
•
They built the house themselves.
Они построили дом сами.
•
The students organized the event themselves.
Студенты организовали мероприятие сами.