Arabic is my mother tongue as I am Egyptian and live in Egypt. English is my second language as I had been studying it since my kindness. Of course it's the language of engineering and programming. I can't imagine that there is an engineer living in this planet who can't be fluent in English. For Turkish; I still studying and practice it. First it was a hobby. But fortunately; it provided me later more benefits and advantages when I had an opportunity to collaborate with Turkish businessmen and technicians.