what dose it mean back-to-back?

I'm not so sure if my reply to your question would be appropriate because you didn't specify in which area or field of specialization you mean to know the answer here; but I hope this helps. If it is a movie that you're referring to, it would mean that the show consists of two movies in one showing. If it is about a loan application, 'back-to-back' would mean that the loan applicant or borrower has to open a deposit account which will serve as a guaranteed payment for the loan he or she has applied for, if this is approved. If it is about a sports activity, it may mean that the player has a buddy in the game. Anyway, regards and until next discussion. Ciao!

it means a team have to play a game even they have played yesterday.

essentially it means; one follows IMMEDIATLY after another. like the person above says...2 movies playing One Right After Another on the same screen without a break inbetween them would be "back to back" another great example is when you are watching tv. when they show a 5 minute block of commercials. those commercials are "back to back" (one right after another).

i do not know it,too. i've seen it a lot of times. many times it means the team will have difficult time. diffciult match,emeny.

it is interesting.do you noticed the "?" in my response above.I meant to give you some chinese meanings,but mylot just can not show chinese character.I am sorry.if you want to know it,you can look up it on internet.

I know you must need the chinese meaning about the word .I will give you some example.acctually, the word 'back-to-back' is an adjective .it means "????;?????”in chinese.for example,Stand back-to-back and we will see which of you is taller(?????,???????????????).do you understand now?