安全

ān quán safe; secure; safety; security

手机

shǒu jī cell phone; mobile phone; CL:部[bu4],支[zhi1]

号

hào ordinal number; day of a month; mark; sign; business establishment; size; ship suffix; horn (wind instrument); bugle call; assumed name; to take a pulse; classifier used to indicate number of people

háo roar; cry; CL:個|个[ge4]

定位

dìng wèi to orientate; to position; to categorize (as); to characterize (as); positioning; position; niche

轨迹

guǐ jì locus; orbit; trajectory; track

查询

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

都

dōu all; both; entirely; (used for emphasis) even; already; (not) at all

Dū surname Du

dū capital city; metropolis

认可

rèn kě to approve; approval; acknowledgment; OK

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]

机房

jī fáng machine room; engine room; computer room

K8 社工

shè gōng social work; social worker

库

kù warehouse; storehouse; (file) library

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