break forth into tears

• 放声大哭；突然大哭起来

break forth into tears的用法和样例：

例句

1. The child broke into a flood of tears.
   这个小孩突然放声大哭。
2. Hearing the story, the old man went off into loud laughter.
   老人听到这个故事后，放声大笑起来。