To figure out how much yarn you need to cut for the first layer, just hold it on top of the circle, spread it out like a fan and see if there are any hollow areas.

算好第一层所需的毛线，将其固定在圆上，散开成扇形，并查看是否存在空白区域。

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In three overlapping circles, three round shapes overlap after the joint and overlap are preserved, only two circles overlap area have been cut off hollow out (figure 3).

以三个圆重叠来说，形状联合后没重叠部分和三个圆重叠部分被保留下来，只有两个圆重叠的区域被剪除镂空(图3)。

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Steam enters at the right, and passes down the hollow central shaft, which has admission ports cut in it.

蒸汽进入在正确的，并通过了中央空心轴，这已入学的港口，削减它。

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Over the next five years, the team will use a long, hollow, rotating drill to cut and retrieve a cylinder of ice roughly 12 centimetres across.

ECONOMIST: The South Pole as location and metaphor

While Woods ended a 30-month wait for a PGA Tour title at the Arnold Palmer Invitational in March, he then struggled to maintain that form as he finished 40th at the Masters, missed the cut at Quail Hollow and then tied for 40th at the Players Championship.

CNN: STORY HIGHLIGHTS

The document's pledge to cut spending and provide stability simultaneously rings hollow in this respect.

CENTERFORSECURITYPOLICY: Center For Security Policy