形容詞 monumental:

1. relating or belonging to or serving as a monument
2. of outstanding significance
3. imposing in size or bulk or solidity
   同義詞：massive, monolithic

1. A monumental gateway in the form of a pair of truncated pyramids serving as the entrance to an ancient Egyptian temple.
   兩旁有塔形建筑的門道以一對(duì)平頭金字塔形式出現(xiàn)的紀(jì)念性的通口，用來(lái)作通往古埃及廟宇的入口
2. The structure surrounding such an opening, such as the monumental or fortified entrance to a palace or walled city.
   城門一種構(gòu)造，圍繞著上述的出口或入口，比如一個(gè)山區(qū)或一設(shè)防的出口通向一宮殿或一有城墻的城市
3. Estonian-born American architect whose bold, monumental designs include the Yale University Art Gallery(1954).
   卡恩，路易斯·伊莎多爾1901－1974愛沙尼亞裔美國(guó)建筑師，他的富于想象力的、不朽的設(shè)計(jì)，包括耶魯大學(xué)的藝術(shù)館(1954年)
4. I have a monumental brass medal.
   我有一枚有紀(jì)念意義的銅牌。

mon.u.men.tal

adj.（形容詞）
Of, resembling, or serving as a monument.
紀(jì)念碑的、象紀(jì)念碑的、用作紀(jì)念碑的
Impressively large, sturdy, and enduring.
巨大的、堅(jiān)硬的和不朽的
Of outstanding significance:
有重大意義的：
例句：
Einstein`s monumental contributions to physics.
愛因斯坦對(duì)物理學(xué)的巨大貢獻(xiàn)

Astounding:
非常的：
例句：
monumental cowardice; monumental talent.
極端的膽怯；非凡的才能

【引伸】
mon.umental.ity
mon.umen.tally
adv.（副詞）