strike (sth) up
(of a band, an orchestra, etc) begin to play (a piece of music) (指乐队、 管弦乐团等)开始演奏(某乐曲)
The band struck up (a waltz). 乐队开始演奏(华尔兹舞曲). strike up sth (with sb) begin (a friendship, an acquaintance, a conversation, etc) esp casually (与某人)开始(交往、 认识、 交谈等)(尤指偶然)
He would often strike up conversations with complete strangers. 他经常与陌生人搭讪.