momentously

enUK

mo·men·tous

M0378800 (mō-mĕn′təs)adj. Of utmost importance; of outstanding significance or consequence: a momentous occasion; a momentous decision.
mo·men′tous·ly adv.mo·men′tous·ness n.
Thesaurus
Adv.1.momentously - in a momentous waymomentously - in a momentous way 
Translations
重大地

moment

(ˈməumənt) noun1. a very short space of time. I'll be ready in a moment; after a few moments' silence. 片刻 片刻,瞬间 2. a particular point in time. At that moment, the telephone rang. 特定 时刻ˈmomentary adjective lasting for only a moment. a momentary feeling of fear. 片刻的,短暫的 倾刻的ˈmomentarily ((American) moumənˈte-) adverb 一時,短暫地 短暂地moˈmentous (-ˈmen-) adjective of great importance. a momentous event. 重大的 重大的moˈmentously adverb 重大地 重大地at the moment at this particular time; now. She's rather busy at the moment. 此刻 此刻the moment (that) exactly when. I want to see him the moment he arrives. 一…就… 一 ... 就 ... ,这一刻