乐天

lè tiān carefree; happy-go-lucky; optimistic

堂

táng (main) hall; large room for a specific purpose; CL:間|间[jian1]; relationship between cousins etc on the paternal side of a family; of the same clan; classifier for classes, lectures etc; classifier for sets of furniture

客户端

kè hù duān client (computing)

app 下载

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

（ 中国

Zhōng guó China

） 有限公司

yǒu xiàn gōng sī limited company; corporation

最新

zuì xīn latest; newest

网址

wǎng zhǐ website; web address; URL

：bt33net