不太确定 inline alpine skating 怎么翻译，根据 wiki:
Alpine owes its existence to skiing, because many skiers commonly practiced
it in the summer months during its origins, as it helped them to train despite
the lack of snow. Skaters complete a course marked by gates while descending
at high speeds. Its basic movements are therefore similar to those of downhill
skiing and many athletes regularly practice both modalities.
然后找了一些影片
# Inline drills to improve your skiing
利用直排轮练习 ski 动作
https://www.youtube.com/watch?v=qLqFM7ZgvOo
# Inline skating for Alpine Ski Racing
滑雪教练 Deb Armstrong 也用直排轮让小孩练动作
https://www.youtube.com/watch?v=HZbHEDt2gnU
# Inline Alpine Nagold 2010 part1
Inline Alpine 的比赛
https://www.youtube.com/watch?v=c8EEURhL8p4
# skate-to-ski 网站
是一个奥运滑雪教练、直排轮者 Doug Lewis 设计的雪季外练习
https://www.rollerblade.com/skate-to-ski/
应该只需要一个长坡、一双竞速直排轮、护具，就可以练习。
有板友玩过吗？北部地区有什么地方可以练习？
有没有人有兴趣一起研究？ (有的话站内信给我～)