endemic
adj.
"particular to a people or locality," 1650s (endemical), with -ic + Greek endemos "native, dwelling in (a place), of or belonging to a people," from en "in" (see en-(2)) + demos "people, district" (see demotic). From 1660s as a noun.
〔蒋〕[en-表示in，dem人民，-ic…的;’属于某种人的”，’属于某地人的”] 某地人(或某种人)特有的，(疾病等)地方性的
〔李〕[en-=in在……之中；dem=the people人民；-ic a.=being……的→“being in the people of a certain area存在于某个地区民众中的”→] I a. prevalent in a particular area or nation某地（或某种人）特有的，地方性的