安全

ān quán safe; secure; safety; security

人

rén man; person; people; CL:個|个[ge4],位[wei4]

脸

liǎn face; CL:張|张[zhang1],個|个[ge4]

识别

shí bié to distinguish; to discern

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]

数据

shù jù data; numbers; digital

shù jù data; numbers; digital; also written 數據|数据

找

zhǎo to try to find; to look for; to call on sb; to find; to seek; to return; to give change

人

rén man; person; people; CL:個|个[ge4],位[wei4]

, 半小时

bàn xiǎo shí half hour

出

chū variant of 出[chu1] (classifier for plays or chapters of classical novels)

chū to go out; to come out; to occur; to produce; to go beyond; to rise; to put forth; to happen; classifier for dramas, plays, operas etc

单

dān bill; list; form; single; only; sole; odd number; CL:個|个[ge4]

Chán see 單于|单于[Chán yú]

Shàn surname Shan

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]

全国

quán guó whole nation; nationwide; countrywide; national

信息

xìn xī information; news; message

调查

diào chá investigation; inquiry; to investigate; to survey; survey; (opinion) poll; CL:項|项[xiang4],個|个[ge4]

大陆

Dà lù mainland China (reference to the PRC)

dà lù continent; mainland; CL:個|个[ge4],塊|块[kuai4]

社工

shè gōng social work; social worker

库

kù warehouse; storehouse; (file) library

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