The handle (1) is a semi-circular ring or an arc.

所述的手柄（1）设置为半圆环或者 设置为弧形边。

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The logic of this defensive pattern imposes on Admiral Nagano an ironclad duty: he must, either by defensive or offensive measures, make the southern arc secure.

防守模式的分析给永野元帅下了一个死命令：他必须，用防守的方案也好，攻击的方案也好，保证南部防线的安全。

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Drag to add a dimension to an arc or circle. Place line end at arc center, and yellow diamond on arc.

通过拖动可向弧或圆添加尺寸。将线端放在弧中心上，并将黄色的菱形放在弧线上。

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That changed when Apple added it as an option in the iPhone 4. (Previous iPhones lacked the oomph to crunch relevant data quickly enough to be practical.) Other examples include cameras and apps that stitch together panoramas from overlapping images shot in an arc around a single point or as a moving sequence.

ECONOMIST: Monitor

Older children who have outgrown the running-in-circles phase can plot an outing to an historic statue (choose from Joan of Arc or Winston Churchill, among others) or a home state street.

BBC: Visiting Washington DC with kids

Suzuki showed a patient structural command, giving an arc-like shape to the Kyrie by waiting a hundred or so bars before applying a substantial crescendo.

NEWYORKER: The Book of Bach