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我如何在Linux終端每再寄一次更新改變美國更改Linux中的更新終端到美國
錯誤：
: Failed to fetch http://ph.nl.archive.ubuntu.com/ubuntu/dists/trusty/InRelease
W: Failed to fetch http://ph.nl.archive.ubuntu.com/ubuntu/dists/trusty-updates/InRelease
W: Failed to fetch http://ph.nl.archive.ubuntu.com/ubuntu/dists/trusty-backports/InRelease
W: Failed to fetch http://ph.nl.archive.ubuntu.com/ubuntu/dists/trusty/Release.gpg Could not resolve 'ph.nl.archive.ubuntu.com'
W: Failed to fetch http://ph.nl.archive.ubuntu.com/ubuntu/dists/trusty-updates/Release.gpg Could not resolve 'ph.nl.archive.ubuntu.com'
W: Failed to fetch http://ph.nl.archive.ubuntu.com/ubuntu/dists/trusty-backports/Release.gpg Could not resolve 'ph.nl.archive.ubuntu.com'
W: Some index files failed to download. They have been ignored, or old ones used instead.