The class burst out laughing.

全班同学突然大笑起来

The class burst out laughing.

全班爆发出笑声。

Then the applause burst out.

随后爆发出掌声。

'For heavens' sake!' he burst out.

“天哪！”他大叫一声。

Karen burst out laughing.

卡伦突然大笑起来。

'He's a bully!' the little boy burst out.

“他仗势欺人！”小男孩突然大叫。