descendant
/dɪˈsendənt/noun
1- a person, plant, or animal that is descended from a particular ancestor子孙, 后裔, 后代：
Shakespeare's last direct descendant.
莎士比亚最后的直系后裔。
1.1
- a machine, artefact, system, etc., that has developed from an earlier, more rudimentary version（机器、制造品等）后继型产品。
USAGE
The correct spelling for the noun meaning 'person descended from a particular ancestor' is descendant, not -ent. Descendent is a less common adjective meaning 'descending from an ancestor'. Almost 15 per cent of the citations for the term in the Oxford English Corpus use the wrong spelling.
词源
late Middle English （as an adjective in the sense 'descending'）： from French， present participle of descendre 'to descend' （see DESCEND）. The noun dates from the early 17th cent.