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bèi yòng reserve; spare; alternate; backup

网址

wǎng zhǐ website; web address; URL

维基百科

Wéi jī bǎi kē Wikipedia (online encyclopedia)

Wéi jī Bǎi kē Wikipedia (online encyclopedia)

官方

guān fāng government; official (approved or issued by an authority)

网址

wǎng zhǐ website; web address; URL

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