Cable News Network = CNN That's a co-axle television cable, it's a very technical term, OK? ATM = Automatic Teller Machine; a teller works with money in a bank. OK? SOS is more interesting and some say it means "save our souls" and others say it means "save our ship"... anyway, it means you are going to die soon if you don't get help and sending an S.O.S. is a dire and urgent plea for help. You quit in the middle of our lesson and now I am helping you and I hope it really does help you. Why are you learning English? To be constructive I hope.