adj.严肃的，严重的；认真的，庄重的；重要的；危险的 双语释义：adj.(形容词)严重的,非同小可的 not easy to deal with causing worry and needing attention, not slight认真的,真诚的 not joking or funny; (intended) to be considered as sincere严肃的,庄重的 as if thinking deeply about important or worrying matters重要