magistracy的复数形式怎么写？

magistracy的音标：magistracy的英式发音音标为：['mædʒɪstrəsi]magistracy的美式发音音标为：['mædʒɪstrəsɪ]...

He's been elected to the magistracy.他已选进地方法官团.The magistracy was usually considered a necessary precondition for entry into the Roman Senate.行政官职通常被认为是进入元老院的必要先决条件....

n.地方行政官，执法官，地方行政官员的职位...