安卓

Ān zhuó Android (operating system for mobile devices)

文件

wén jiàn document; file; CL:份[fen4]

加密

jiā mì to encrypt; encryption; to protect with a password

最好

zuì hǎo best; (you) had better (do what we suggest)

的

de of; ~'s (possessive particle); (used after an attribute); (used to form a nominal expression); (used at the end of a declarative sentence for emphasis)

dí really and truly

dì aim; clear

dī see 的士[di1 shi4]

平台

píng tái platform; terrace; flat-roofed building

（TG:cn17883） 信

xìn letter; mail; CL:封[feng1]; to trust; to believe; to profess faith in; truthful; confidence; trust; at will; at random

gjb