0 a person with good knowledge or understanding of a subject --
1 a person with good knowledge or understanding of a subject: --
Walter’s a baseball maven and knows Hank Aaron’s statistics by heart.
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.