grav·itas
noun/ˈɡrævɪtɑːs/, /ˈɡrævɪtæs/
/ˈɡrævɪtɑːs/, /ˈɡrævɪtæs/
[uncountable] (formal)- the quality of being serious
严肃；庄严 - a book of extraordinary gravitas
一本非常严肃的书
Word OriginLatin, from gravis ‘serious’. - a book of extraordinary gravitas