官方

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

网址

wǎng zhǐ website; web address; URL

：cc55net 永

yǒng forever; always; perpetual

利

lì sharp; favorable; advantage; benefit; profit; interest; to do good to; to benefit

Lì surname Li

皇宫

huáng gōng imperial palace

app 平台

píng tái platform; terrace; flat-roofed building

介绍

jiè shào to introduce (sb to sb); to give a presentation; to present (sb for a job etc); introduction