adj.固执的，顽固的，执拗的，棘手的，难以去除的，难以对付的

The old man is notoriously obstinate and refuses to change his mind about anything.
这位老人以顽固出名，对任何事情都不肯改变主意。
She's being obstinate, I just want her to listen to our advice for once.
她很固执，我只是想让她这次听我们的建议。
His obstinacy led to his downfall in the business deal.
他的顽固导致他在商业交易中失败。
The child's stubbornness made it impossible to persuade them to eat their vegetables.
孩子的固执使我们无法说服他们吃蔬菜。
Her obstinate nature often caused conflicts with her coworkers.
她的倔强性格经常与同事产生冲突。
Despite medical warnings, he remained obstinately addicted to smoking.
尽管有医学警告，他仍然固执地沉迷于吸烟。
The patient's obstinate refusal to follow the doctor's orders delayed their recovery.
病人固执地不遵医嘱，这延误了他们的康复。
The teacher tried every persuasive technique, but the student remained obstinately silent in class.
老师尝试了各种说服方法，但学生在课堂上依旧固执地保持沉默。
The government's obstinate stance on the issue has sparked public protests.
政府对这个问题的顽固立场引发了公众抗议。
The coach had to be patient with his star player's obstinate behavior during training sessions.
教练在训练课上不得不对明星球员的固执行为保持耐心。