On June 15,1977, I was one of 900 high schoolers greeted by the new president, President Jimmy Carter, on the south lawn of the White House, right there on the other side of the ellipse.

1977年6月15日，我为900位高中生其中一个迎接新总统，总统吉米·卡特，见面会在白宫南草坪上，就在另一边。

Not only that, the Moon orbits the Earth on an ellipse.

不仅如此，月球绕地球公转轨道是形。

It has two points, called foci, which act as a combined center for an ellipse.

它有两个，称为，为一个联合中心。

An ellipse with zero eccentricity would just be a regular old circle.

偏心率为零就是一个普通。

For one thing, it's not a perfect circle, it's quite an elongated ellipse.

至少不是一个标准形，而更像是一个拉长。

In 2012, the landing ellipse for the Curiosity Lander was only 4 miles wide by 12 miles long, an area more than 200 times smaller than Viking's.

在2012年，好号着陆区仅有4英里宽，12英里长，比海盗号小两百多倍。

Unlike an ellipse, there's no exact geometric definition for an " oval" , but they can be constructed by joining other arcs of different radii.

与不同，卵形没有确切几何定义，但它们可以通过连接其他不同半径弧来构建。

An ellipse is an asymmetrically shaped closed oval.

任何都是对称封闭形。

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

就像开普勒曾指出，地球轨道是个，相对以太阳为中心绕起来话有两个。

And as if they were cuboidal cells that got stretched tall, their nuclei also are stretched into an ellipse.

由于它们是立方体细胞，被拉伸得很高，它们细胞核也被拉伸成形。

Remember too that the Moon's orbit around the Earth is an ellipse.

同样要记住是，月亮绕地球公转轨道是个。

Eccentricity measures how flattened an ellipse is compared to a circle.

偏心率衡量是与相比扁平度。

Weighing all the possibilities, the computer spits out the potential area of impact in the form of a landing ellipse.

权衡过所有可能性，计算出一个可能接触区域，一个形着陆区。

Simply put, eccentricity tells how much the ellipse deviates from a perfect circle.

简单地说，离心率表示与正偏离程度。

As the planet orbits the star, it makes a big circle (or ellipse) .

当行星围绕恒星运行时，它会形成一个大(或)。

Well, an ellipse is a shape that resembles a kind of squashed circle.

是一种类似于被压扁形状。

Its foci are two points within the ellipse that describe its shape.

它是内描述其形状两个。

Mercury is relatively more elliptical than the rest, yet it is still closer to zero than it is to one, meaning that it is closer to a circle than to an extreme ellipse.

水星相对而言比其他行星更，但它仍然更接近于零而不是1，这意味着它更接近形而不是极端唇形。

There's a common misconception that the Earth has seasons because it orbits the Sun on an ellipse, and so it's closer to the Sun in summer and farther in winter.

有一种常见误解，即认为地球四季产生是因为地球公转轨道是个，所以夏天离太阳近，冬天离太阳远。

An orbit with an eccentricity greater than one is no longer an ellipse but a parabola if e is equal to one a hyperbola if e is greater than one.

偏心率大于 1 轨道，如果 e 等于 1，它就不再是而是抛物线，如果 e 大于 1，则是双曲线。