This suitcase had--instead of having four little wheels on the bottom, it had two wheels on the back.

这种旅行箱不是四个轮子都在底部，而是在后面有两个轮子。

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And in a motorcycle, you only have two wheels.

开摩托车时，你只有两个轮子。

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Which is sort of a childhood nursery rhyme. And then they cut to this pig and a car with two pin wheels,

这是小时候的儿歌。然后镜头切换到猪和有风车的车，

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