the day before yesterday是什么意思

the day before yesterday

[英][ dei bi?f?: ?jest?di][美][?i de bf?r ?j?stde]

adv.前天; 前日;

yesterday

[英][?jest?de?][美][?jest?rde?]

n.昨天; 往昔; <正式>过去;

adv.在昨天，在昨日; 近来;