to have developed from something that existed in the past从…发展演变而来
All living creatures are thought to descend from an organism that came into being three billion years ago.据信所有生物都是从30亿年前出现的一种有机体演变而来的。
be descended from sbC2 to be related to a particular person or group of people who lived in the past从…繁衍而来;是…的后代
Her father is descended from Greek royalty.她的父亲是希腊皇室的后代。
Humans are descended from (= developed from) ape-like creatures.人类是从类人猿进化而来的。