1. (交通)阻塞
A tie-up or a traffic tie-up is a long line of vehicles that cannot move forward because there is too much traffic, or because the road is blocked by something.

1. an interruption of normal activity

Synonym: standstandstill

2. a social or business relationship

e.g. a valuable financial affiliation
he was sorry he had to sever his ties with other members of the team
many close associations with England

Synonym: affiliationassociationtie