A line located at either end and typically running the width of a playing area, on which a goal post or goal is positioned.
位于两端的线，尤指球场宽边的线，在这一边通常有球柱或球门。
Robots cannot be placed nor remain behind the goal line or in the out area.
机器人不能摆放在球门线后，更不容许停留于此。
The goal-line referee is responsible for judging infringements of the rules in the goal area for supervising penalties and corner throws and for watching the movements of the goalkeeper.
球门裁判员的职责是判断球门区的犯规，监督执行罚则和掷角球，并且观察守门员的动作。
Corner Area: the edge line with the goal line cross, have a dot, radius is 1m, drawing a quarter of circle arc.
角球区：以边线和球门线交叉点为圆点，以1米为半径，向场内各画一段四分之一的圆弧，这个弧内地区叫角球区。
The goal-line referee is responsible for judging infringements of the rules in the goal area, for supervising penalties and corner throws and for watching the movements of the goalkeeper.
球门裁判员的职责是判断球门区的犯规，监督执行罚则和掷角球，并且观察守门员的动作。
The goal-line referee is responsible for judging infringements of the rules in the goal area, for supervising penalties and corner throws and for watching the movements of the goalkeeper.
球门裁判员的职责是判断球门区的犯规，监督执行罚则和掷角球，并且观察守门员的动作。
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