0 the activity of making buildings in a way that protects the natural environment, for example by using green energy (= electricity which is produced with wind, water, or the sun): --
1 a building that is designed in a way that protects the natural environment: --
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.