保密

bǎo mì to keep sth confidential; to maintain secrecy

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

多

duō many; much; often; a lot of; numerous; more; in excess; how (to what extent); multi-; Taiwan pr. [duo2] when it means "how"

渠道

qú dào irrigation ditch; (fig.) channel; means

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]

公司

gōng sī (business) company; company; firm; corporation; incorporated; CL:家[jia1]

HelloWorld 社工

shè gōng social work; social worker

库

kù warehouse; storehouse; (file) library

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