| 哪个 | nǎ ge | which; who |
| 网站 | wǎng zhàn | website; network station; node |
| 可以 | kě yǐ | can; may; possible; able to; not bad; pretty good |
| 查询 | chá xún | to check; to inquire; to consult (a document etc); inquiry; query |
| 某人 | mǒu rén | someone; a certain person; some people; I (self-address after one's surname) |
| 行为 | xíng wéi | action; conduct; behavior; activity |
| 轨迹 | guǐ jì | locus; orbit; trajectory; track |
| 别人 | bié ren | other people; others; other person |
| bié rén | other people; others; other person | |
| 都 | dōu | all; both; entirely; (used for emphasis) even; already; (not) at all |
| Dū | surname Du | |
| dū | capital city; metropolis | |
| 信任 | xìn rèn | to trust; to have confidence in |
| 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] | |
| 研究所 | yán jiū suǒ | research institute; graduate studies; graduate school; CL:個|个[ge4] |
| 在线 | zài xiàn | online |
| 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 |
| 系统 | xì tǒng | system; CL:個|个[ge4] |