He used a rope to mark off the circle.
他用一根绳子把这个圈围了起来。
Although neither managed a complete circle, both veered off a straight line.
尽管没有走出一个完整的圆，他们也已经偏离了直线。
We did steep turn, circle descent, and circle land with power off.
今天训练了急速转弯，盘旋下降和无动力盘旋滑行降落。
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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