The Earth orbits in an ellipse.
地球沿椭圆形轨道运动。
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。
在盒盖的背面画一个椭圆。
Yes? How do you parametrize an ellipse in space?
怎样参数化空间上的椭圆曲线呢？
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。
The orbit of every planet is an ellipse with the Sun at a focus.
第一定律（轨道定律）：所有行星都沿各自的椭圆轨道运动，太阳在该椭圆的一个焦点上。
All the above physical parameters conform the approximate ellipse law.
各种物性参数均遵循近似椭圆规律变化。
At neighbouring points, the eccentricity of the light ellipse is small.
在邻近的点上，光椭圆的离心率较小。
Newton proved mathematically that the path of a planet must be an ellipse.
牛顿用数学证明了行星运行的轨道必定是椭圆形的。
The moon doesn't describe a circle round the earth, but rather an ellipse .
月球绕地球运行的轨道不是浑圆的，而是椭圆的。
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。
You can activate the grid every time you create a shape such as a rectangle or an ellipse.
您可以在每一次创建一个矩形或椭圆形等形状时激活网格。
This map, by the way, is the entire sky spread out into an ellipse, known as a Mollweide projection.
（此图，顺便说一句，此图是整个天空展开成椭圆的图——摩尔维特投影（Mollweide projection） 。）
Then how USM works and how the ellipse trace of particle on the surface of stator forms are analyzed.
接着分析了超声波电动机的工作原理和定子表面质点椭圆运动的形成机理。
Earth's orbit is not a perfect circle, but is rather an oval-shaped ellipse, like that of the orbits of all the other planets.
地球轨道不是完美的圆形，而是像其它行星的轨道一样，呈椭圆形。
Planets orbit the sun in oval-shaped paths called ellipses, and the sun is slightly off to the side of the center of each ellipse.
行星绕太阳运行的轨道是近圆形的椭圆，太阳位于每个椭圆中心的附近。
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。
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.
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。
And then Kepler came with these laws that said basically that planets move in an ellipse around the sun, and that they move in a very specific way along that ellipse.
接着开普勒提出了他的定律，他说行星基本上是绕太阳作椭圆运动，它们在椭圆上有特殊的运动规律。
You can also tailor ellipses using the ellipseMode function, which specifies whether the x,y location represents the corner (CORNER) or the center of the ellipse (CENTER).
还可以使用ellipseMode函数定制椭圆，它指定x,y位置是否代表了椭圆的角（CORNER）或中心（CENTER）。
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。
Theoretical analysis and experimental results show that the proposed ellipse detection algorithm has the advantages of high robustness, wide applicability, high accuracy and good efficiency.
理论分析和实验结果表明，所开发的椭圆提取算法具有鲁棒性强、适用范围广、精度高、速度快等优点。
Theoretical analysis and experimental results show that the proposed ellipse detection algorithm has the advantages of high robustness, wide applicability, high accuracy and good efficiency.
理论分析和实验结果表明，所开发的椭圆提取算法具有鲁棒性强、适用范围广、精度高、速度快等优点。
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