垂直农业发展出来的一个变化是，在堆叠的、在轨道上移动的托盘上种植植物。

One variation on vertical farming that has been developed is to grow plants in stacked trays that move on rails.

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有一次，我们看到它以与轨道一致的方式移动。

Once, we saw it was moving in a pattern consistent with an orbit.

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很多人认为地球绕太阳的轨道是完美的圆形，就像手在一块制作精良的手表上移动那样平滑、有规则，但事实并非如此。

A lot of people think of earth's orbit around the sun as being perfectly circular, as smooth and as regular as, say, the way that hands move on a well-made watch, but it just doesn't work that way.

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% Some people, the next most popular answer with 5%, which is a nice low number, wanted to put two in the 2 p x before they moved on.

下一个更多的选择占了,是一个比较低的数字，想要将两个电子在移动之前放入2px轨道,记住在我们双倍填充之前。

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