百度翻译：n.叙事诗;史诗;史诗般的电影(或书籍);壮举;惊人之举
adj.具有史诗性质的;史诗般的;漫长而艰难的;艰苦卓绝的;宏大的;壮丽的;给人深刻印象的
复数： epics
牛津词典：
noun
1
[C, U] 叙事诗；史诗
a long poem about the actions of great men and women or about a nation's history; this style of poetry
one of the great Hindu epics
伟大的印度教史诗之一
the creative genius of Greek epic
富有创造力的希腊史诗天才
compare lyric n. (1)
2
[C] 史诗般的电影（或书籍）
a long film/movie or book that contains a lot of action, usually about a historical subject
3
[C] (sometimes humorous) 壮举；惊人之举
a long and difficult job or activity that you think people should admire
Their four-hour match on Centre Court was an epic.
他们在中心球场历时四个小时的比赛是一个壮举。
adj.
[usually before noun]
1
具有史诗性质的；史诗般的
having the features of an epic
an epic poem
史诗般的诗
compare lyric adj. (1)
2
漫长而艰难的；艰苦卓绝的
taking place over a long period of time and involving a lot of difficulties
an epic journey/struggle
漫长而艰难的旅程；艰苦卓绝的斗争
3
宏大的；壮丽的；给人深刻印象的
very great and impressive
a tragedy of epic proportions
巨大的不幸