n.严重，认真，严肃

The matter at hand is of utmost seriousness, and we cannot afford to take it lightly.
手头的事情非常严重，我们不能掉以轻心。
The judge's solemn expression reflected the gravity of the crime he was dealing with.
法官严肃的表情体现了他正在处理的罪行的严重性。
Her illness was a serious health concern that required immediate medical attention.
她的病情是一个严重的健康问题，需要立即就医。
His words carried a deep sense of seriousness, leaving everyone in silence.
他的话语中充满了严肃，让每个人都陷入沉默。
The government has declared a state of emergency due to the escalating seriousness of the pandemic.
政府因疫情日益严峻而宣布进入紧急状态。
The teacher's warning about plagiarism was not to be taken lightly; it reflected the seriousness of academic integrity.
老师关于抄袭的警告绝非玩笑，它体现了学术诚信的重要性。
In matters of national security, no one takes the seriousness lightly.
在国家安全问题上，没有人会忽视其严重性。
The scientist's research findings were so serious that they could change the course of medicine.
科学家的研究成果极其重要，有可能改写医学历史。
The family sat down to discuss the seriousness of their financial situation.
家人坐下来讨论他们财务状况的严峻性。
The company's board meeting was marked by a deep sense of seriousness as they deliberated on the company's future strategy.
公司的董事会会议充满了严肃气氛，他们在商讨公司的未来战略。