0 a set of stairs moved up or down by electric power on which people can stand and be taken from one level of a building to another, especially in shops, railway stations, and airports: --
1 a set of stairs that moves by electric power and on which people can stand to be taken up and down from one level to another, usually within a building --
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.