de·cil·lion /dɪˈsɪljən/
  一千的11乘方
  De·cil·lion n.  According to the English notation, a million involved to the tenth power, or a unit with sixty ciphers annexed; according to the French and American notation, a thousand involved to the eleventh power, or a unit with thirty-three ciphers annexed. [See the Note under Numeration.]
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