| 一部分 | yī bù fèn | portion / part of / subset | ![]() |
| 一部分 | yī bù fen | portion / part of / subset | ![]() |
| 子集 | zǐ jí | subset | ![]() |
| 子集合 | zǐ jí hé | subset (math.) | ![]() |
| 金丝燕 | jīn sī yàn | Aerodramus, genus of birds that use echolocation, a subset of the Collocaliini tribe (swiflets), two of whose species &ndash / Aerodramus fuciphagus and Aerodramus maximus &ndash / build nests harvested to make bird's nest soup | ![]() |
| 真子集 | zhēn zǐ jí | proper subset | ![]() |
| 闭子集 | bì zǐ jí | closed subset (math.) | ![]() |
