Rub英[rʌb]美[rʌb] v.擦；磨；搓；（使）相互摩擦；摩擦（尤指引起疼痛或损害）涂。 n.擦；抹；搓；揉；问题；困难。 [例句]rub the surface smooth.
Is Rub Ranking Legit? Truth About
Rub Ranking" Controversy: Does It Actually Work? We Tested It! Ranking What Is How Works And Why Matters
Dalbo
