in a way that shows you are determined to do what you want and refuse to do anything else

She stubbornly refused to sign the document. 她固执地拒绝在文件上签字。

"No," said William stubbornly. “不，”威廉固执地说。

in a way that is difficult to move, change, or deal with

The key stubbornly refused to turn. 钥匙固执地拒绝转动。

Rates of infection have been stubbornly high. 感染率一直居高不下。