obdurate
adjective formal uk/ˈɒb.dʒə.rət/ us/ˈɑːb.dʊr.ɪt/
disapproving顽固的；执拗的
extremely determined to act in a particular way and not to change despite what anyone else says
The president remains obdurate on immigration. 总统在移民问题上依然固执己见。
（某人或某物）倔强的；难办的
used to describe a person who refuses to change their mind, or someone or something that is difficult to deal with or change
Union leaders remain obdurate that working conditions and pay improve. 工会领导坚持改善工作环境和加薪的要求。
Several obdurate facts/differences remain, preventing a compromise solution. 难以解决的事／不可调和的分歧依然存在，妨碍达成折中的方案。