会众歌唱
Unaccompanied congregational singing can be beautiful and satisfying.
congregationalism───n.公理制；会众制
conventional thinking───思维惯性
Congregational Church───（基督教）公理教会
Congregationalist───n.公理会之教友；adj.公理会的
congregational───adj.会众的；公理教会的
congregationally───聚集地
conventionalising───使成为惯例