0 used to describe something that is organized in two levels or stages: --
Council functions throughout Cornwall were organised on a two-tier basis, with a county council and district councils.
The company proposed to replace its two-tier board with a single board of directors.
The disaster led to the introduction of a two-tiered security system at American airports.
We have a two-tier system in this city, because there are so many private schools.
Broadband prices are now two-tier, with providers charging as much as £100 extra if you live in the country.
1 used to describe something that has two levels, one on top of the other: --
2 consisting of two levels: --
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.