strike up

乐队开始演奏

when a group of musicians starts to play music

指一组音乐家开始演奏音乐

管弦乐队开始演奏

when an orchestra starts to play music

指管弦乐队开始演奏音乐

to begin talking to someone, especially a stranger

to start a friendship with someone

to get to know someone slightly

结成联盟

to form a formal agreement or connection

形成一个正式的协议或联系