官方

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

网址

wǎng zhǐ website; web address; URL

：cc55net 足

zú foot; to be sufficient; ample

jù excessive

彩

cǎi (bright) color; variety; applause; applaud; lottery prize

app 排行榜

pái háng bǎng the charts (of best-sellers); table of ranking

维基百科

Wéi jī bǎi kē Wikipedia (online encyclopedia)

Wéi jī Bǎi kē Wikipedia (online encyclopedia)