A mathematician is a blind man in a dark room looking for a black cat which isn't there.
数学家是一个盲人在一个黑暗的房间里寻找一只不在那里的黑猫。
-- Charles Darwin 查尔斯·达尔文
A mathematician is a blind man in a dark room looking for a black cat which isn't there.
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A mathematician is a blind man in a dark room looking for a black cat which isn't there.
数学家是一个盲人在一个黑暗的房间里寻找一只不在那里的黑猫。
-- Charles Darwin 查尔斯·达尔文
