BYA

释义与例句

sym.
  1. 1.

    Alternative spelling of bya (“billion years ago”).

    Alternative spelling of bya (“billion years ago (short scale): 10⁹ years ago”).

  2. 2.

    Alternative spelling of bya (“billion years ago”).

    Alternative spelling of bya (“billion years ago (long scale):10¹² years ago: a trillion years ago (short scale)”).

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