0 something that gives you energy or encourages you to do something, or that encourages something to happen: --
The dawning realization that his childhood world was founded upon a lie provided the rocket fuel that propelled him into writing.
A drop of rocket fuel eased the last few miles to the hostel.
In those days speed enjoyed a vogue as an energy-producing rocket fuel for naughty boys and girls to stay up and party all night.
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.