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。

youdao

The gray circle at the center of each image is the "pole hole," north of which satellite sensors have historically been unable to collect data.

每幅图中心位置的灰色圆圈是“极点”，卫星从来都无法在极点以北收集数据。

youdao

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。

youdao

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

But although there were now only the mandatory four fielders inside the circle, dot balls built pressure and O'Brien finally went big again, only to hole out at long-off.

BBC: Ireland advance to Super Eights

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