官方

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

网址

wǎng zhǐ website; web address; URL

：cc55net esb 易

yì easy; amiable; to change; to exchange

Yì surname Yi; abbr. for 易經|易经[Yi4 jing1], the Book of Changes

世博

Shì bó abbr. for 世界博覽會|世界博览会[Shi4 jie4 Bo2 lan3 hui4], World Expo

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)