0 Old HSK word(s):
自然界* *

Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.

自 self, private, personal / from
然 yes, certainly / pledge, promise
界 boundary, limit / domain / society / the world

Hsk Characters:
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual




Astatin (S) [zi4 ran2 jie4 bu4 cun2 zai4] 自然界不存在
Natur (S) [zi4 ran2 jie4] 自然界