他使得轧辊上面的一排卡，显示它可以前进和后退。

He makes it roll on top of the row of CARDS, showing it can go forward and backwards.

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人们用“jet ski”这个词组表示各种各样的个人船只；用“rollerblade”这个词表示任何直排轮滑——也用“卓帕卡布拉”来表示任何神秘的动物。

People use “jet ski” to refer to a wide variety of personal watercraft; “rollerblade” to mean any inline skates—and “chupacabra” to mean any weird animal.

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