turn on
US /tɜːrn ɑːn/
UK /tɜːrn ɑːn/

1.
ligar, acender
to start the flow or operation of something by means of a switch, button, or other control
:
•
Could you please turn on the lights?
Você poderia por favor ligar as luzes?
•
I need to turn on my computer to check emails.
Preciso ligar meu computador para verificar os e-mails.
2.
3.
atacar, voltar-se contra
to attack or become hostile toward (someone or something)
:
•
The dog suddenly turned on its owner.
O cachorro de repente atacou seu dono.
•
The crowd turned on the speaker after his controversial remarks.
A multidão se voltou contra o orador após seus comentários controversos.