免费

miǎn fèi free (of charge)

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

高效

gāo xiào efficient; highly effective

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]

技术人员

jì shù rén yuán technical staff

社工

shè gōng social work; social worker

库

kù warehouse; storehouse; (file) library

软件

ruǎn jiàn (computer) software

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