n. 1.(车辆等的)作 U 形转弯〔尤指车辆在街道上作 180° 调头〕。 2.似 U 形转弯的东西；〔比喻〕方向的大改变。 短语和例子 an U-turn worker 返回原地[原就业场所]工作的人。 vi. 作 180 度大转弯。
complete reversal of direction of travel
A U-turn in driving refers to performing a 180 degree rotation to reverse the direction of travel. It is called a "U-turn" because the maneuver looks like the letter U.
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