0 Old HSK word(s):


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Hsk Characters:
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual




Hermann von Helmholtz (Eig, Pers, 1821 - 1894) [he4 er3 man4 feng2 hai4 mu3 huo4 zi1] 赫尔曼冯亥姆霍兹