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0 Old HSK word(s):
Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.
Hsk Characters:
HSK -Characters and beyond:
Gb
Big5
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Multilingual
from: Universala Vortaro, Zamenhof
Diketen, Acetylketen (4-Methylen-2-oxetanon) (S, Chem)
[er4 yi3 xi1 tong2]
二乙烯酮