ep·och·al /ˈɛpəkəl, ˈɛˌpɑkəl/
(a.)新紀元的,劃時代的
Ep·o·chal a. Belonging to an epoch; of the nature of an epoch. “Epochal points.”
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epochal
adj : highly significant or important especially bringing about or
marking the beginning of a new development or era;
"epochal decisions made by Roosevelt and Churchill";
"an epoch-making discovery" [syn: epoch-making]