| 黑盒 | hēi hé | black box; fig. system whose internal structure is unknown |
| 社工 | shè gōng | social work; social worker |
| 库 | kù | warehouse; storehouse; (file) library |
| 查询 | chá xún | to check; to inquire; to consult (a document etc); inquiry; query |
| 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] | |
| 通话 | tōng huà | to hold a conversation; to talk over the telephone; phone call |
| 记录 | jì lù | to record; record (written account); note-taker; record (in sports etc); CL:個|个[ge4] |
| 挺 | tǐng | straight; erect; to stick out (a part of the body); to (physically) straighten up; to support; to withstand; outstanding; (coll.) quite; very; classifier for machine guns |
| 放心 | fàng xīn | to feel relieved; to feel reassured; to be at ease |
| 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] | |
| 私家 | sī jiā | private; privately owned or managed |
| 侦探 | zhēn tàn | detective; to do detective work |
| 在线 | zài xiàn | online |
| 社工 | shè gōng | social work; social worker |
| 库 | kù | warehouse; storehouse; (file) library |