on a dime informal used to refer to a manoeuvre that can be performed by a moving vehicle or person within a small area or short distance 〈非正式〉指在小范围（或短距离）内（移动中的车辆或人）进行的调动（或机动）动作： boats that can turn on a dime. 可在小范围内掉头的船。 ■ quickly or instantly 迅速地; 立即： he turned on a dime into a low voice. 他立即将音量调低。 |