living donor
noun [ C ] uk/ˌlɪv.ɪŋ ˈdəʊ.nər/ us/ˌlɪv.ɪŋ ˈdoʊ.nɚ/
活体器官捐献者
a living person who gives one of their organs for a transplant (= an operation to put a new organ into a sick person's body)
Last year, 191 people received kidneys from living donors. 去年，共有191人接受了活体捐献者的肾脏。
Part of the liver is transplanted from a living donor into an adult patient. 部分肝脏从活体捐献者的身体移植到成年患者体内。