(noun.) the day immediately before today; 'it was in yesterday's newspapers'.
(noun.) the recent past; 'yesterday's solutions are not good enough'; 'we shared many yesterdays'.
(adv.) on the day preceding today; 'yesterday the weather was beautiful'.
(adv.) in the recent past; only a short time ago; 'I was not born yesterday!'.
整理:雪莉
整理:梅纳德