disk jockey
noun (North American English)(also disc jockey British and North American English)
(abbreviation DJ)
(also informal deejay)
a person whose job is to introduce and play recorded popular music, on radio or television or at a club, party, etc. 唱片骑师：在广播或电视上或在俱乐部，聚会等中介绍和播放录制的流行音乐的人。