serious/ˈsɪərɪəs/
adj.1. 严肃的；庄重的；不苟言笑的He is a serious boy.他是个严肃的孩子。
This is a serious political story, not an entertainment.这是一本严肃的政治故事，不是供消遣的。
2. 认真的；不开玩笑的3. 重要的，重大的；严重的The mistake is not very serious.这错误不太严重。
There were more than ten serious casualties in the Monday plane crash.有十多人在星期一飞机失事事故中受重伤。
4. 需慎重考虑的；需精湛技艺的a serious artist技艺精湛的艺术家