1ADJ （疾病）地方性的，流行的 If a disease or illness is endemic in a place, it is frequently found among the people who live there. （疾病）地方性的，流行的 [technical]
Polio was then endemic among children my age.
那时小儿麻痹症在我这个年纪的孩子中很常见。
SYN widespread, common, sweeping, extensive
2ADJ-GRADED (情况、问题)常见的,流行的 If you say that a condition or problem is endemic, you mean that it is very common and strong, and cannot be dealt with easily. (情况、问题)常见的,流行的 [written]
Street crime is virtually endemic in large cities.
街头犯罪近乎是大城市的通病。
...powerful radicals with an endemic hatred and fear of the West.