burst into

US /bɜːrst ˈɪntuː/
UK /bɜːrst ˈɪntuː/
"burst into" picture
1.

突然开始, 爆发

to suddenly begin to do something, especially to produce something such as tears or laughter

:
She burst into tears when she heard the sad news.
听到这个悲伤的消息,她突然哭了起来
The audience burst into applause at the end of the performance.
演出结束时,观众爆发出掌声。
2.

闯入, 冲进

to enter a place suddenly and with force

:
The police burst into the room.
警察闯入了房间。
He burst into the office, looking for his boss.
冲进办公室,寻找他的老板。