snarl up
phrasal verbsnarl up | snarl something  up 
- to involve somebody/something in a situation that stops their movement or progress; to become involved in a situation like this阻塞;妨碍(某事物) - The accident snarled up the traffic all day.这次事故使交通堵塞了整整一天。 
 
- The accident snarled up the traffic all day.
- to become caught or twisted; to make something do this(使)缠结 - The sheets kept getting snarled up.床单老缠到一起。 
 related noun snarl-up
- The sheets kept getting snarled up.