乌合之众 [- hé zhī zhònɡ]a motley crew (crowd); a disorderly crowd; a gathering of crowds; a crowd assembled like crows; a motley force that knows no discipline; sheep that have no shepherd; tag-rag and bobtail; mob; rabble; ragabash [riffraff]:
•¶ 这些土匪是一群乌合之众， 不堪一击。 These bandits are just a disorderly mob and will collapse at the first blow.