圆的

We are measuring the radius of the circle.

我们正在测量的半径。

The axis of a circle is its diameter.

的轴线是其直径。

This is a chord of a circle.

这是个的弦。

How do you demonstrate that the earth is round?

你怎样证明地球是的?

The diameter and the circumference of a circle correlate.

的直径有相互关系。

Columbus's contention that the earth was round turned out to be correct.

结果证明哥伦布认为地球是的这论点是对的。

A ball is round.

球是的。

The tiny kitten approached the enormous bear and let out a purr and a mew.

那猫却走近大腰的灰熊，冲它"喵呜"，"喵呜"地叫着。

Also known as the transparent boxfish, the roundbelly cowfish has two short horns in front of its eyes.

像透明的盒子鱼样，在腹角鱼的眼睛上方也有两个短角。

Morphologies of glochidium and juvenile mussel were studied during parasitic metamorphosis development of Anodonta woodiana pacifica.

摘要对背角无齿蚌的钩介幼虫寄生变态及稚贝发育过程进行了形态学观察和比较。

Histologically, MGA consists small round glands with open lumens, distributed mostly randomly in a hypocellular dense collagenous or fatty stroma.

MGA由小而的成，腔开放，大多数随机分布于少细胞的致密胶原化间质或脂肪中。

A circle,as an ideal pure form,with its centripetalism and self-sufficiency,possesses a high degree of aesthetic value and expressive force.

作为理想的纯粹形态,其向心自足特性,具有很高的审美价值和表现力,深得建筑师、规划师的青睐,以致成为规划设计中种普适性的模式。

Definition : A strophoid of a circle with the pole O at the centre of the circle and the fixed point P on the circumference of the circle.

在上的环索线，以心为极点，上的点为固定点，所作出的图形！