现在需要计算一个以a，b为半轴的椭圆的面积,其实椭圆就是一个被压扁的圆。

Let's say that we want to find the area of an ellipse with semi-axes a and b. OK, so that means an ellipse is just like a squished circle.

youdao

但是，你们知道，椭圆只是一个被压扁了的圆而已。

But, you know, an ellipse is just a squished circle.

youdao