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unknown
英/ʌnnˈəʊn/
美/ənˈnoʊn/
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01adj.
不知道的, 未知的, 陌生的
not known
02n.
未知物, 未知数
an unknown and unexplored region; a variable whose values are solutions of an equation
WORD BY WORD
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not known
an unknown and unexplored region; a variable whose values are solutions of an equation