0 to stop using something, usually a machine, because it is old and has been used too much: --
After flying for 38 years, their Wessex helicopter is about to be pensioned off.
1 to stop using something either because it is too old or not practical: --
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.
Можем да го завършим стъпка по стъпка, колкото и дълъг да е пътят и не може да бъде завършен, колкото и кратък да е пътят, ако дори не маркирате отпечатъка си.