punctilious
/pʌŋkˈtɪliəs/Someone who is punctilious is very careful to behave correctly. 拘谨的
adjective [原级] 一丝不苟的;精密细心的;拘泥形式的
He was punctilious about being ready and waiting in the entrance hall exactly on time. 他拘于礼数地准备妥当,按时在门厅的入口处等候。