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。

youdao

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

它现在是个完整的圆圈了，它可以滚的很快，，快到忽视了花儿，快到没有时间和虫子们说话。

youdao

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。

youdao

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

CNN: Rare supermoon eclipse comes Sunday

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

NPR: Not All Seasons Are Created Equal

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

NPR: Really Important Football Game Coming