Trace and cut a circle out of the poster board. Then cut out a 1/2″ to 1″ hole in the center of that circle, depending on whether you’re doing a large or small hat.

首先，在纸板上剪一个圆，在圆的中间剪一个1/2英寸到1英寸的孔，具体大小取决于你所做的饰品大小。

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A close encounter with another star put the doomed star (orange circle) on a path that took it near a supermassive black hole.

一颗过于接近已经熄灭的恒星的恒星，会进入一颗超级巨型黑洞的轨道。

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An example is a bolt hole circle, in which the diameter of the bolt circle, the spacing of thebolt holes, and other parameters must be specified.

例如螺栓孔圆形，螺栓圈的直径，其中必须指定螺栓孔和其他参数的间距。

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

VOA: special.2009.04.15

Allowed to walk in from the right circle, Vanek held the puck waiting for a hole to open up and then snapped a shot, which Pavelec snagged with a quick wave of his glove.

WSJ: Jets remain in the hunt with 2-1 win over Sabres

Of course, exploiting a hole is also the only way to test that it has been fixed, so those outside the inner circle will be forced to rely on the software vendor's say-so when they get fixes and patches.

BBC: How digital Armageddon was averted