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)。

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).

youdao

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)。

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).

youdao