圆弧、圆心地圆心 CEN
线、圆、圆弧地交点 INT
线、圆弧、圆地重足 PER
圆心地圆心 CEN
圆弧或圆地限象点 TAN
线、圆弧、圆地延伸线 EXT
圆弧或圆地象限点 QUA
线、圆弧、圆地延长线 EXT
垂直圆地平柱圆 vertical circle
在2016年里约热内卢奥运会上，人们惊讶地看到美国著名游泳运动员迈克尔·菲尔普斯身上圆圆的紫色印记。
During the 2016 Rio Olympics, people were surprised to see the round, purple marks on the body of the famous American swimmer Michael Phelps.
过了一会儿，她又睁开圆圆的小眼睛，看着小鸡崽儿们高兴地欢歌高唱着、疾步跑过来，躺在她的双翅下。
After a while, she opened her small and round eyes again, and saw her children singing happily and trotting over to lie down under her wings.
她圆圆的脸上笑盈盈地现出两个酒窝。
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