It's been done before off a mega ramp which allows for higher speeds and more air time but it had never been documented on a vertical ramp until now.

这个动作之前就已经在大型斜坡上被完成过，该斜坡可以实现更高的速度和更多的空中停留时间。但在此之前却从未有人在垂直斜坡上完成过。