crack up
大笑;精神崩潰;破裂
口語·表示大笑或崩潰
英文釋義
to suddenly laugh uncontrollably
例句
When she told the story, everyone in the room cracked up.
典故來源
源自19世紀,crack原指破裂,引申為突然大笑或精神崩潰。