The children stood in a circle.

孩子们站成一圈。

《牛津词典》

He drew a circle in the sand with a stick.

他用枝条在沙地上画了一个圆。

《牛津词典》

They formed a circle and sang "Auld Lang Syne."

他们围成一圈，唱起了《友谊地久天长》。

《柯林斯英汉双解大词典》

Arches are formations that look like half a circle above an opening or hole in a rock.

VOA: special.2009.04.15

During this part, when you're doing a quarter of a circle, this is supposed to be a quarter of a circle.

在这部分,当你沿着四分之一圆运动,这就是个一个圆的四分之一

耶鲁公开课 - 基础物理课程节选

Pick a time. Let's say, if I go a quarter of a circle, I expect to be moving to the left.

选一个时间,例如我走四分之一圈,我想向左走

耶鲁公开课 - 基础物理课程节选

Opened in 1928, the plane simply rotates in a circle powered only by its noisy propeller.

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O'Brien spent the evening marching in a circle in front of the Russian embassy.

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One exercise puts children in a circle where they take turns introducing themselves to each other.

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