官方

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

网址

wǎng zhǐ website; web address; URL

：cc55net 办公

bàn gōng to handle official business; to work (esp. in an office)

应用软件

yìng yòng ruǎn jiàn application software

下载

xià zǎi to download; also pr. [xia4 zai4]