u-turn

柯林斯词典

1. N-COUNT If you make a U-turn when you are driving or riding a bicycle, you turn in a half circle in one movement, so that you are then going in the opposite direction. U形转弯; 掉头
Dave made a U-turn on North Main and drove back to Depot Street. 戴夫在北干道掉头，把车开回了第伯街。
2. N-COUNT If you describe a change in someone's policy, plans, or actions as a U-turn, you mean that it is a complete change. (政策、计划、行动等) 180度大转弯; 彻底转变[表不满]
He's doing a U-turn and forecasting 1% growth this year after earlier predicting a 2% drop. 他来了个180度大转弯，早先预言今年会有2%的下降，现在又预言会有1%的增长。