1·Man is not a circle with a single centre; he is an ellipse with a double focus.
人并不是只有一个圆心的圆圈；他是一个有两个焦点的椭圆。
2·The main axis of the planet's orbital ellipse shifts each time when it goes around the sun.
当行星绕太阳运行时，其轨道椭圆的主轴每次都会改变。
3·Cutting the cone at various angles gives you various shapes of ellipse. Until the angle of your cut exceeds the angle of the side of the cone.
从侧面不同角度切割圆锥，你便会得到不同的椭圆，直到你的切割角度超过圆锥体侧边的角度。
4·So, you know, if you find that the area is too easy, you can integrate any function other than ellipse, if you prefer.
你们都知道，要求这个面积是非常简单的，如果你们想的话，可以积分除了椭圆函数以外的任何函数。
5·Cutting thecone at various angles gives you various shapes of ellipse. Until theangle of your cut exceeds the angle of the side of the cone.
如果你从侧面不同角度切割圆锥，便会有不同样子的椭圆，除非，直到你的切割角度超过圆锥体侧边的角度。
1·If this is an ellipse around the Earth, this would be perigee and this would be apogee.
如果这是一个围绕地球的椭圆形，那么这是近地点，这是远地点。
2·It could be a small piece of it. It could even be, to trick you, maybe an ellipse in there or a triangle in there or something like that.
它可能只是整个平面的一部分，奇怪一点的话，它可能是椭圆形的，也可能是三角形的或是其他什么形状。
3·The mainaxis of the planet's orbital ellipse shifts each time it goes round the sun.
这颗星球每围太阳绕行一周，它的椭圆形轨道的中轴就变化一次。
4·It's good to use a reference for the shape, such as drawing an ellipse within which the fire will remain and you can send the flames up to any of the edges of this ellipse.
比较好的做法是用一个参照物，比如画一个椭圆形让火焰保持在这个范围之内，而且你可以让火苗窜到椭圆的边缘处。
5·And the sun is not at the center of the ellipse the sun is to one side.
太阳并不是在椭圆形的中间而是在一边。