A sharp turn or reversal in direction.

• One segment of a zigzag line or path.

之字形路线中的一次急转

• 故事情节中的意外转折

To make a sharp turn or reversal.

• To move in a zigzag course.

以急转或突然改变方向地移动

An unexpected twist in a storyline or plan.

• A sharp change from an established pattern.