broad church
noun [ S ] UK uk/ˌbrɔːd ˈtʃɜːtʃ/ us/ˌbrɑːd ˈtʃɝːtʃ/
包容各种不同意见、主张的群体（或机构、信仰）;自由主义群体
a group, organization, or set of beliefs that includes a wide range of different opinions or ideas
The Conservative Party is a broad church. 保守党是个包容各种不同政见的组织。