The following packages will be SUPERCEDED by a higher-priority channel是什么意思？

　　参考资料： 　　https://stackoverflow.com/questions/42015732/the-following-packages-will-be-superceded-by-a-higher-priority-channel 　　在使用conda安装或者更新包的时候，经常会出现这样的提示：The following packages will be SUPERCEDED

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