all of a sudden

US 
UK 
  • na.“all at once”的变体;突然
  • Web突然地;惊变;忽然
na.
1.
“all at once”的变体
2.
突然

Sample Sentence

Definition:
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard