0 past simple and past participle of double --
1 to become twice as much or as many, or to make something twice as much or many: --
The government aims to double the number of students in higher education within 25 years.
Company profits have doubled since the introduction of new technology.
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.