Dreye權威釋義|immemorial

a.

（因年代久遠而）無法追憶的；古老的；遠古的
There have been ponies on Dartmoor from time immemorial.
自遠古以來，達特穆爾高原就一直有小型馬。

ad.

immemorially

同義參見:

反義參見:

以上來源於：《英漢大辭典》

adj.

very old or long past:

from time immemorial.

C17: from med. L. immemorialis, from in- ‘not’ + memorialis ‘relating to the memory’.

以上來源於：《簡明牛津英語詞典》