middle-of-the-road
adjective uk/ˌmɪd.əl.əv.ðəˈrəʊd/ us/ˌmɪd.əl.əv.ðəˈroʊd/
温和路线的；多数人能接受的，为大众所喜爱的
used to describe a person, organization, opinion, or type of entertainment that is not extreme and is acceptable to or liked by most people
middle-of-the-road pop music 为大众所喜爱的流行音乐
They adopted a sensible, middle-of-the-road policy on defence spending. 他们在国防开支上采取了理性务实的温和政策。
Compare: centrist adjective