0 Old HSK word(s):


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Hsk Characters:
HSK -Characters and beyond:
from: Universala Vortaro, Zamenhof









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Ludolph van Ceulen (Eig, Pers, 1540 - 1610) [lu3 dao4 fu1 fan4 ke1 yi1 lun2] 鲁道夫范科伊伦