perfect circle

基本解释

Love because love and cherish are required, as there is no rules, how can draw a perfect circle it?
因为爱是需要呵护与珍惜的，正如没有规矩，如何能画出一个完美的圆呢？
Where a perfect circle has an eccentricity value of zero, roughly half of exoplanets seen thus far have an eccentricity of 0.25 or greater.
一般一个完美圆周的偏心值为0，而约有一半的系外行星的偏心值在0.25或者更高。
One story about Giotto tells how he sent Pope Boniface VIII a perfect circle painted with a single brushstroke when asked for samples of his work. The Pope was apparently very impressed.
有一个故事说教皇波尼法爵八世曾向乔托索要创作样本，乔托只用了简单的一笔就画了个完美的圆，然后将圆送给他，这件事给教皇留下了深刻的印象。

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
The software is intuitive, so the robot can describe a perfect circle, say, if the operator shows it just a few points.
ECONOMIST: Robots: Nothing to lose but their chains