And the domino stackers who built it say it was the tallest ever in America.

建造它的多米诺骨牌堆垛机说它是有史以来最高的。

Scattered throughout the hallways were examples of the company's best known and bestselling toys, from the classic Rock-a-Stack ring stacker, on the market since 1960, to the 4-in-1 Ultimate Learning Bot.

走廊落着该公司最知名、最畅销的种玩具，从1960年上市的经典彩虹套圈，到四合一终极学习机器人。