The following packages will be SUPERCEDED by a higher-priority channel是什麼意思？

　　參考資料： 　　https://stackoverflow.com/questions/42015732/the-following-packages-will-be-superceded-by-a-higher-priority-channel 　　在使用conda安裝或者更新包的時候，經常會出現這樣的提示：The following packages will be SUPERCEDED

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