名詞 disciplinarian:

1. someone who demands exact conformity to rules and forms
   同義詞：martinet, moralist

1. He's a good teacher but he's not much of a disciplinarian.
   他是個(gè)好教師，但卻不是個(gè)很好的紀(jì)律執(zhí)行者。

dis.ci.pli.nar.i.an

n.（名詞）
One that enforces or believes in strict discipline.
執(zhí)行紀(jì)律者，嚴(yán)格紀(jì)律信奉者
adj.（形容詞）
Disciplinary.
紀(jì)律的，訓(xùn)練的