"Circle Lightning", which means that Opel's unmatched strength and speed; Opel's always full of vigor and vitality.
“圆圈闪电”，即意味着欧宝汽车的力量和速度是无与伦比的；欧宝公司永远充满着生机与活力。
2
Uniform circular motion occurs when an object goes around in a circle and when the speed never changes.
匀速圆周运动发生在，当物体沿着一个圆环滚动，速率恒定的情况下。
3
And that linear velocity, which, in this case, is really your speed, is of course the circumference of the circle divided by how many seconds it takes to go around.