0 an extremely small piece of matter with a positive or negative electric charge, produced when a radioactive atom is broken down --
1 an extremely small piece of matter with a positive or negative electric charge, produced when an atom is broken down. A beta (+) particle is the same as a positron; a beta (–) particle is an electron. --
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.