0 a smooth, hard substance forming a layer inside the shells of some sea creatures. It is white but also seems to shine with different colours, and is used to make buttons and for decoration. --
1 a hard, shiny, white substance inside the shells of some sea animals that is used for decoration --
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.