0 Old HSK word(s):


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Hsk Characters:
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual




Burrhus Frederic Skinner (Eig, Pers, 1904 - 1990) [bo2 er3 he4 si1 fu2 lei2 de2 li3 ke4 si1 jin1 na4] 伯尔赫斯弗雷德里克斯金纳