time immemorial
time immemorial (1)太古时代;无法追溯的年代 (2)很长时间
time immemorial. 1. A point in time so far back that no living person has knowledge or proof contradicting the right or custom alleged to have existed since then. • At common law, that time was fixed as the year 1189, the year that Henry II of England died. — Also termed time out of