ringmaster

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++ring·mas·ter /ˈrɪŋˌmɑːstə $ -ˌmæstər/ noun [countable]  the person who introduces the performers and animals in a circus 马戏团表演指挥

Examples from the Corpus

ringmaster• Ben still rolls his eyes and acts the ringmaster in his role as the David Owen of pop.• He was the ringmaster against the former circus act.

ring·mas·ter nounChineseSyllable  

introduces performers who person the in Corpus the animals and

ringmaster
ring‧mas‧ter /ˈrɪŋˌmɑːstə $ -ˌmæstər/ noun [countable]
the person who introduces the performers and animals in a circus

ring·mas·terBrE /ˈrɪŋmɑːstə(r)/ 🔊NAmE /ˈrɪŋmæstər/ 🔊 nouna person in charge of a circus performance 马戏表演领班（或指挥）