break into something
phrasal verb with break verb uk/breɪk/ us/breɪk/ broke | broken
突然开始做…
to suddenly begin to do something
He felt so happy that he broke into song (= suddenly began to sing). 他高兴得突然唱了起来。
She walked quickly, occasionally breaking into a run (= starting to run). 她快步走着，时而跑几步。