虽然卫星的快速旋转足以将它们挤压成一个光滑的椭圆形，但它无法解释碟形中心的边缘。

While the moons' rapid rotation would be enough to squash them into a smooth oval, it can't explain the rim around the centre of the saucer shape.

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因此，低收入住宅和制造业设施将被限制在中心商务区的西部边缘。

Lower-income residences, along with manufacturing facilities, would be confined, therefore, to the western margins of the CBD.

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阴影的中心要比边缘暗得多，”杂志上说。

The center of the umbra is much darker than its edges, " it says.

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