0 used to describe the packaging in which products are sold, especially food products and medicines, that is made so that you can see if it has already been opened: --
anti-tamper bottles/containers/packaging
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.