0 A pay-as-you-go system is one in which you pay for a service before you use it and you cannot use more than you have paid for: --
1 a system in which you pay for a service before you use it, and you cannot use more than you have paid for: --
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Vi kan slutföra det steg för steg hur lång vägen än är och den kan inte slutföras hur kort vägen än är om du inte ens markerar ditt fotavtryck.