All of the helicopter landing skids must be within the landing circle.
降落时脚架需完全落在圆形的降落区内。
Stop over take-off point, descend vertically and land completely within the landing circle.
在起飞点的上空停止，然后垂直下降，降落时机体必须完全在圆形的降落区内。
Stop over take-off point, descend vertically and land completely within the landing circle.
在起飞点的上空停止，然后垂直下降，降落时机体必须完全在圆形的降落区内。
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