The Cle Anglaise introduce you to one of the nightmares of second language learners, phrasal verbs. A phrasal verb is a verb that consists of two or three words; its meaning is different from the meaning those words would have if you considered each one separately.
To “turn off” is a good example of a phrasal verb.
1) Turn off : to make a light, machine, or engine stop working. (E.g. Don’t forget to turn off the lights.)
2) Turn off : to leave the road or path that you are going along, and start going on another. (E.g. Stephen turned off the main road into an almost an empty side-street)
3) Turn off by something : to make someone decide that they do not like someone or something. (E.g. I liked the house from the outside, but the decoration inside really turned me off)
La Clé anglaise est présentement fermée pour les vacances de Noël, mais sera de retour en janvier 2017. D'ici là, joyeuses Fêtes et au plaisir de vous rencontrer l'an prochain!
Sources : LONGMAN Pocket Phrasal Verbs Dictionary