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HSK levels

    十干

    shígān

    1. same as 天干; the 10 heavenly stems 甲, 乙, 丙, 丁, 戊, 己, 庚, 辛, 壬, 癸 (used cyclically in the calendar and as ordinal number like Roman I, II, III)

    十干十二支结合起来用于计时。 shígān shí'èr zhī jiéhé qǐlái yònyú jìshí.