他看了一眼她戴的帽子，突然大笑起来。

He took one look at the hat she was wearing and ___burst ___out laughing.

我放声大哭，因为我的围裙完全烧焦了。

I ___burst ___out crying because my apron had burned completely.

当她听到那个滑稽的故事时，她忍不住放声大笑。

When she heard the hilarious story, she just ___burst ___out laughing uncontrollably.