Usages of controlar
En mi casa cada ducha tiene un grifo que controla la temperatura.
In my house each shower has a faucet that controls the temperature.
Controlamos el sonido en la fiesta.
We control the sound at the party.
Mi hermano construyó un pequeño robot y lo controla con su teléfono.
My brother built a small robot and controls it with his phone.
Yo le expliqué que esa tecla controla el volumen del altavoz.
I explained to him that that key controls the speaker volume.
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