An upright spinis defined as any rotation which is performed on one leg when the skater is in an upright position.
--强烈建议至少看过三遍视频之后再看字幕，一上来就看字幕对听力没有帮助！Wealsodoother,uh,workoutthingsthatmakeusvery,verytired.Butit'sokay,we'llsurvive.Andwe,Ihaven'tdonethisfo
