It's also the ratio of a circle's circumference divided by its diameter.

也是圆周长除以直径比率。

It is used for the ratio of the circumference of a circle to its diameter.

pi代表着圆周到直径比例。

We need the circumference of the area.

我们需要这个区域圆周长。

Any intelligent species might have an interest in natural numbers (1, 2, 3 and so on) as well as things such as pi.

任何聪明物种都可能对自然数(1、2、3等等)和圆周率之类东西感兴趣。

Unlike an adventure round the circumference of the Earth.

不像沿着地球圆周进行冒险。

In the simplest definition, pi is the ratio of a circle's circumference to its diameter.

在最简明定义中，π是圆周长与其直径比率。

721. The recruit made the current circulate in the circuit on the circumference.

新使电流在圆周上电路中循环（传播）。

You see, the ratio of a circle's circumference to its diameter is what's known as an irrational number, one that can never be expressed as a ratio of two whole numbers.

因为，圆周长和直径比值是一个无理数，无法用两个整数比值来表示。

A bulldozer is a powerful vehicle with a caterpillar track on it, so it means that the wheels act kind of in a long caterpillar-like tread, and those treads move in a long circular motion rather than just in a circular motion.

推土机是一种装有履带强大车辆，这意味着其轮子作用类似于长条形履带式履带，这些履带进行是长周期圆周运动， 而非简单圆周运动。

You can choose anything that you want: a poem, the state capitals, the first 25 digits of PI.

一诗、各州或者圆周率前25位。

That's right, March 14th, or 3.14, the day we celebrate the fascinating mathematical constant Pi, the ratio of a circle's circumference to its diameter.

没错，3月14日，也就是3.14，是我们庆祝迷人数学常数圆周率日子，这是圆周长与直径比值。

People had to learn to move their hips in a circular motion, like a hula dancer in Hawaii, to spin it around their body.

人们必须学会像夏威夷草裙舞演员那样，以圆周运动方式移动臀部，使这个大圆管绕着身体旋转。

Of all the oceans, the Pacific is by far the largest, stretching almost a third of the way round the globe.

在所有大洋之中，太平洋是目前最大，跨度几乎占到地球圆周三分之一。

You can choose anything that you want: a poem, the state capitals, the first 25 digits of PI. Whatever.

你可以选择任何想记住东西：一诗、各州或者圆周率前25位。什么都行。

Again for more than two thousand years, it was impossible to conceive the planets as moving in paths other than circles.

同样，两千多年来人们“不可能想象”行星是以轨道而非圆周形式运行。

A circle is a two dimensional figure with a radius and a circumference which is the distance around the circle.

圆是具有半径和圆周二维图形，圆周是围绕圆距离。

The Greek word, gyro is used to describe the circling motion of the rotisserie that holds the meat.

希腊语gyro是用来描述旋转烤肉架圆周运动。

Nevertheless, when I scaled a high escarpment, I could see no volcanoes within a radius of several miles.

可是，我攀上一座高耸悬崖，半径几海里圆周内望不见火山。

You see, for the most part, the earth rotates around the sun in a nearly perfect circle.

你看，在大多数情况下，地球绕着太阳以近乎完美圆周旋转。

An eddy is a large current of water moving in a circular motion.

涡流是指做圆周运动大量水流。