You are probably aware that the earth's orbit around the sun is not shaped like a perfect circle.

你可能知道，地球围绕太阳的轨道形状不像一个完美的圆。

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Now that it was a perfect circle, it could roll very fast, too fast to notice the flowers and talk to the worms.

既然它已成了一个完整的圆圈，所以滚动得非常快，快得以至于无暇观赏花儿，也无暇与蠕虫倾诉心声。

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Earth's orbit is not a perfect circle, but is rather an oval-shaped ellipse, like that of the orbits of all the other planets.

地球轨道不是完美的圆形，而是像其它行星的轨道一样，呈椭圆形。

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Since the orbit of the moon is not a perfect circle, there are times when the moon is closer to our planet.

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Here's the explanation: If the Earth made a perfect circle round the sun, the seasons would be almost exactly equal.

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So, I think, there's going to be - sort of actually appreciating almost a perfect circle of that kind of achievement.

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