标题:
大虾们帮帮
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作者:
Mankiw
时间:
2003-3-23 20:46
标题:
大虾们帮帮
there are twice as many K pencils as L pencils in the box说的到底是谁是谁的两倍?
作者:
joywzy
时间:
2003-3-23 21:29
K/L=2
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