严肃的用英语怎么说

严肃的用英语可以说作 "serious"。这个词来自拉丁语 "serius"，意思是"严厉的"、"认真的"。下面是一些例句：
This is a serious matter and it requires your full attention. 这是一件严肽的事情，需要您全神贯注。
She has a serious expression on her face. 她脸上露出严肃的表情。
He always takes a serious approach to his work. 他总是对工作认真负责。
The company is facing serious financial difficulties. 这家公司正面临严峻的财务困难。