used when you are stating that something is the last in a long series and emphasizing how often something has happened （某事已发生多次，并强调其频繁性）第 n 个的，第 n 次的
Idioms
to the nth degree
extremely; to an extreme degree 极端地；非常地；极大程度上 The children tested her patience to the nth degree. 孩子们挑战了她的耐心极限。