*se·ri·ous/`sɪrɪəs; ˈsɪəriəs/ adj 1 a serious problem, situation etc is bad and worrying 严重的，重大的: a serious illness 严重的疾病 2 be serious to be sincere about what you say or do 认真: John's serious about becoming an actor. 约翰想当演员是认真的。 3 a serious person is always quiet and sensible and does not often laugh 严肃的，庄重的