Until the helicopter is hovering over the take-off point.

直到直升机到达起飞点的上空。

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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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The elevation distance between the take-off point and the bottom of the valley is 300-400 meters averagely, 700 meter the highest.

这些起跳点距离山下谷底的高差，一般在300 -400 米之间，高差最大处可达700 米以上。

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Teams using inflatable rafts locate stranded pets and take them to a drop-off point, where they can be transported to a shelter.

CNN: Pet rescuers race against time