0 a long, flat parasite (= an organism that lives in another from which it gets its food) which lives inside the bowels of humans and other animals --
1 a parasite (= animal that lives in another organism and feeds from it) that sometimes lives inside the bowels of humans and other animals --
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.