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from san diego to minnesota-3

(0/) 2010-04-10 00:38:10

from san diego to minnesota-2

(0/) 2010-04-09 23:47:38

from san diego to minnesota－１

(0/) 2010-04-09 20:24:52

标准差、标准误计算

(2/) 2010-04-09 16:05:38

fishing in albert lee: 2007-8-22

(1/) 2010-04-06 16:06:30