官方

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

网址

wǎng zhǐ website; web address; URL

：cc55net 全国

quán guó whole nation; nationwide; countrywide; national

最大

zuì dà biggest; largest; maximum

快

kuài rapid; quick; speed; rate; soon; almost; to make haste; clever; sharp (of knives or wits); forthright; plainspoken; gratified; pleased; pleasant

3 平台

píng tái platform; terrace; flat-roofed building

xwf