0 a system by which two or more airlines agree to offer a single ticket and to use the same flight number for connections to a place where only one of them goes: --
Under code-sharing passengers can travel on two airlines with a single ticket.
a code-sharing agreement/arrangement
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.