Severalplacesintheworldhavebecomefamousbecausepeoplethe...
问题详情：Severalplacesintheworldhavebecomefamousbecausepeoplethereliveaverylongtime.Theseplacesareusuallyinmountainousareas,farawayfrommoderncities.Doctors,scientists,andpublichealthexpertsoftentravelt...