1. 形容詞
   重大的, 重要的
   意義重大的
   

   同義字詞
   big,consequential,earth-shattering,earthshaking,eventful,historic,important,major,material,meaningful,monumental,much,significant,substantial,tectonic,weighty
   

例句

1. It was a momentous trip.
2. This was a momentous step.
3. The mid-war years were momentous times.
4. We are truly living in momentous times!
5. The consequences will again be momentous .
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