0 used when describing disagreements or differences, especially between different social groups: --
If parents are encouraged to be involved in school, there is less chance of a them-and-us situation developing.
The management has its own restaurant. - It's definitely a case of them and us.
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.