randomly       
adverb uk/ˈræn.dəm.li/ us/ˈræn.dəm.li/
 informal随机的;任意的 
in a way that is unexpected or does not seem to have any reason or cause
  He just randomly shouts stuff. 他只是随意地喊着什么。 
 See: random
 - More examples
- The candidates were randomly selected by a computer.
- Participants were randomly assigned to one of three treatments.
- randomly generated email addresses
- He would randomly show up at my house at 7 a.m.
- You can't just randomly take things that don't belong to you.