偷偷

tōu tōu stealthily; secretly; covertly; furtively; on the sly

查询

chá xún to check; to inquire; to consult (a document etc); inquiry; query

某人

mǒu rén someone; a certain person; some people; I (self-address after one's surname)

行为

xíng wéi action; conduct; behavior; activity

轨迹

guǐ jì locus; orbit; trajectory; track

公认

gōng rèn publicly known (to be); accepted (as)

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]

技术

jì shù technology; technique; skill; CL:門|门[men2],種|种[zhong3],項|项[xiang4]

大

dà big; huge; large; major; great; wide; deep; older (than); oldest; eldest; greatly; very much; (dialect) father; father's elder or younger brother

dài see 大夫[dai4 fu5]

牛

niú ox; cow; bull; CL:條|条[tiao2],頭|头[tou2]; (slang) awesome

Niú surname Niu

付费

fù fèi to pay; to cover the costs

社工

shè gōng social work; social worker

库

kù warehouse; storehouse; (file) library

chalalalacom