短語(yǔ)詞組短語(yǔ)buy to get one free 買二送一Buy two get one free 買二贈(zèng)一;買二送一Buy one get on free 買一贈(zèng)一Buy -one-get-free-one 買一送一buy -one-get-one-free offer 買一送一 返回 buy one get one free