0 to experience a difficult or unpleasant situation: --
You'd think his children would be more sympathetic towards him after all he's gone through (= the many bad things he has experienced).
1 to examine something that contains a collection of things carefully in order to organize them or find something: --
2 to do something in order to practise or as a test: --
Why don't we go through the whole demonstration once more?
3 to use a lot of something: --
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.