This is a chord of a circle.

这是个圆的弦。

The children had a dance in a circle.

孩子们围成一圈跳舞。

The axis of a circle is its diameter.

圆的轴线是其直径。

They sat in a circle round the fire.

他们围着火坐成一圈。

The diameter and the circumference of a circle correlate.

圆的直径与圆周有相互关系。

A diameter passes through the center of a circle.

直径从圆心穿过。

Please move counterclockwise in a circle!

请逆时针做圆周运动。

They stood in half a circle.

他们站成半圆形。

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

圆作为理想的纯粹形态,其向心与自足特性,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一种普适性的模式。

Among some Zulus, the traditional kraal consists of a number of huts arranged in a circle around a cattle corral.

在某些祖鲁人中，传统的栅栏村庄由围著畜栏的一圈草屋组成。

And I will encamp in a circle against you, And will besiege you with palisades, And will raise up siegeworks against you.

3我必四围安营攻击你，用栅栏围困你，立起高垒攻击你。

In the upper left hand cornor,(there is a circle, in it there is a five yellow star.) there is a yellow star surrounded by a yellow circle.

左上角缀黄色五角星，周围环绕黄色圆圈。

We've lost our way and I am sure we are wandering in a circle.We started from that old dead tree there and have come back to it.

我们迷了路, 我确信我们又兜回到了原处。我们从那棵老枯树那儿出发而现在又回到了原地。

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.

在圆上的环索线，以圆心为极点，圆周上的一点为固定点，所作出的图形！

Another form is the menhir, a simple upright stone usually placed with others to form a circle, as at Stonehenge and Avebury in England, or a straight alignment, as at Carnac in France.

另一种形式是史前巨石柱，这是一块与其他直立石块放在一起组成一个圆圈的直立石碑，如英格兰的巨石阵和爱扶倍利，或排成直线，如法国的卡尔纳克。