单词	universal set
释义	universal set noun : a set that contains all elements relevant to a particular discussion or problem : universe of discourse sense 2 Word History First Known Use 1933, in the meaning defined above
随便看	beyond the bounds of possibility beyond the call of duty beyond the grave beyond the means of beyond the pale beyond the reach of beyond understanding beyond/outside the bounds of possibility beyond/past redemption beyonder beyondest beyondness beyonds beyonst drop the bomb drop the handkerchief drop the subject drop to one's knees drop volley drop weight drop window drop wire drop zone drop-bottom bucket drop-dead

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