Definition
to commence playing or singing a piece of music
開始奏樂；開始歌唱
When the band struck up, everyone couldn't help but start dancing.
當樂隊開始演奏時，每個人都忍不住開始跳舞。
As soon as she saw her friend, she struck up their special song.
她一看到朋友，就開始唱起他們特別的歌曲。
At the party, they all struck up singing old tunes together.
在派對上，他們一起開始唱起了老歌。