The red segment here is a false positive and the purple segment is a false negative. The player mistakenly added the red segment when they should have added the purple segment instead. The green segment is correct.
图中红色片段是假阳性，紫色片段是假阴性。 玩家错误地添加了红色段，而不是区添加紫色片段。 绿色片段正确。
