a circle of

• 一圈

a circle of的用法和样例：

例句

1. Some boys were engaged in a ding-dong battle on the playground surrounded by a circle of gaping class-mates.
   一些男孩在操场上打斗得难解难分，围观的同学看得目瞪口呆，十分惊讶。
2. A wheel with a circle of pins at right angles to its face, used as a tripping device.
   针轮，销轮一种轮子，其表面插着一圈针，用来做陷阱设备