English Translation

"Besides, Jim puts on a superb performance in slalom and jumps. Most surprising of all is his big jump over the roof of a car. That's a totally amazing scene. Terry (starring Linda Blair) puts on a nice outfit like a roller-skater, however it is uncertain if she really skated the difficult routines--because it was shot from a distance. 

"This movie gives you a nice feeling of roller-skating, by showing smiling children to old people, from beginners who do not know how to stop to advanced skaters with acrobatic techniques."