And roller sports officials say they have offered an exciting concept with several competitions of in-line skating.
轮滑运动的官员就表示他们推荐了一个关于一些滚轴溜冰比赛的刺激概念。
In the actual production can bike or roller skating in the original production line of the appropriate transformation, can be mass-produced.
在实际生产中可以在原有的自行车或轮滑生产线上适当改造，就能大批量生产。
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