If I make the total energy positive, it's not an ellipse.

如果我让总能量为正，它就不是一个椭圆了。

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。

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。

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。

One characteristic of Earth's orbit is its eccentricity, the degree to which the orbit is an ellipse rather than a circle.

地球轨道的一个特点是它的离心率，也就是轨道是椭圆而不是圆形的程度。

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。

The Earth orbits in an ellipse.

地球沿椭圆形轨道运动。

It's the focus of the ellipse.

它是椭圆型的焦点。

It is negative; it is an ellipse.

总功是负的，所以是椭圆轨道。

Another name foran ellipse is an oval.

椭圆的另一个名字叫“卵形的”。

You see an ellipse there?

你们看到这里的？

Yes? How do you parametrize an ellipse in space?

怎样参数化空间上的椭圆曲线呢？

So here is an ellipse, A here is P and here is A.

所以，这是一个椭圆轨道，这是P，这是。

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

但是，你们知道，椭圆只是一个被压扁了的圆而已。

You can see that you have got an oval shaped ellipse.

你可以看到一个椭圆形。

think of it as being an ellipse-- and this is another one.

相像它是椭圆的-,这是另外一个。

The current National Christmas Tree was planted on the Ellipse in 1978.

现在的这棵国家圣诞树是1978年在椭圆广场栽种的。

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。

Four years later, the 31-year-old is releasing her third album, Ellipse.

四年后，31岁的她发行了第三张专辑，椭圆。

And at time zero, when it is there, it has a velocity in that ellipse.

时间为0时，在轨道上有速度。

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。

One of the citations in the OED entry for ellipse is from a fellownamed Liddell.

在牛津英语词典(OED)里，这个词的一条引用是出自一个叫里德尔的家伙。

Circle-ellipse problem: Subtyping variable-types on the basis of value-subtypes.

是Subtyping variable - types on the basis of value - subtypes。

Listing 3 shows how to draw lines, rectangles, circles (using the ellipse), and ellipses.

清单3显示了如何绘制线、矩形、圆(使用椭圆)及椭圆。

Of course, if I make the total energy positive, it's not an ellipse, so then it's all over.

当然，如果我让总能量,为正，这就不是椭圆了，所以，都可以迎刃而解了。

If this is an ellipse around the Earth, then this would be perigee and this would be apogee.

如果这是一个围绕，地球的椭圆形轨道，那么这是近地点，这是远地点。

The ellipse function also takes four arguments, defining the location and width/height.

ellipse 函数也接受四个参数，分别定义位置和宽/高度。

As Kepler showed, the Earth's orbit is an ellipse, with the sun at one of the two focal points.

开普勒曾表明，地球的轨道是一个椭圆，这个椭圆有两个焦点，太阳在其中一个上。

So as long as the angle of the cut comes shortof the angle of the cone's side it is an ellipse.

所以，只要你切割的角度达不到圆锥侧边的角度，它依然是椭圆。

Now I will add a shadow, I will select ellipse tool and I will create a shape below the header.

好了，添加一些阴影。我用的是椭圆工具，在头部下面创建一个细长的形状。