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roller speed skating technology | straight line technical
IRSCC speed skating exper...
2017
-
11
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18
What is roller skating (Roller skating)
Roller skating (Roller sk...
2017
-
07
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11
The basic knowledge of skating
Straight skating and doub...
2017
-
07
-
11
Roller skid classification instructions
Flush FREESTYLE SLALOM Wi...
2017
-
07
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11
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