<classify> Nke a na-eme ka onye na-agba skeeti tụgharịa. Ọ bụrụ na skeeti atụlaga naka nri, onye na-agba ya atụlagakwa naka nri, ọ bụrụ na skeeti atụlaga naka ekpe, onye na-agba ya atụlagakwa naka ekpe.  <topic>: how things work, ice skates 