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1·The referee saw the bite mark too, but he did nothing about it.

裁判也看见牙印了，就是坐视不理。

2·Shape cut off, shall even be cut off from the first selected object with other shapes overlap, so if selected small round first, then select the apple mark the result will be bite small circle.

形状剪除是从第一个选中的对象中剪除与其它形状重叠的部分，因此若先选中小圆再选中苹果标注则结果将变成被咬一口的小圆。