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