四

sì four; 4

通

tōng to go through; to know well; (suffix) expert; to connect; to communicate; open; to clear; classifier for letters, telegrams, phone calls etc

tòng classifier for an activity, taken in its entirety (tirade of abuse, stint of music playing, bout of drinking etc)

一

yī one; 1; single; a (article); as soon as; entire; whole; all; throughout; "one" radical in Chinese characters (Kangxi radical 1); also pr. [yao1] for greater clarity when spelling out numbers digit by digit

达

dá to attain; to reach; to amount to; to communicate; eminent

Dá surname Da

查询

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

查询

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

车辆

chē liàng vehicle

行驶

xíng shǐ to travel along a route (of vehicles etc)

轨迹

guǐ jì locus; orbit; trajectory; track

定位

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

。 唯一

wéi yī only; sole

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]

必应

Bì yìng Bing (search engine)

社工

shè gōng social work; social worker

库

kù warehouse; storehouse; (file) library

社工

shè gōng social work; social worker

库

kù warehouse; storehouse; (file) library

搜索

sōu suǒ to search (a place); to search (a database etc)

shegongshop