three-point turn（英式也常说 turn in the road）：一种车辆掉头方法，通常通过前进—倒车—再前进（三次方向变换/三次“点”）在狭窄道路上完成接近 180° 的转向。日常也可更宽泛地指“用几次来回挪车完成掉头”（有时不止三次）。
/ˌθriː pɔɪnt ˈtɝːn/
I did a three-point turn to head back.
我做了一个三点掉头返回。
Because the street was narrow and traffic was coming, she waited for a safe gap and completed a careful three-point turn without crossing the curb.
因为街道很窄又有来车，她等到安全空隙后小心完成了三点掉头，没有压上路缘。
“three-point”字面意思是“三个点/三次动作节点”，指完成掉头时车辆方向通常需要分成三步（前进、倒车、前进）；“turn”是“转弯/转向”。该说法来源于驾驶训练与道路安全语境，用来描述一种标准化的低速掉头操作。
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