I retired to my lair, and wrote some letters.我回到自己休息的地方, 写了几封信....a fox's lair.狐狸窝The village was once a pirates' lair.这个村子曾一度是海盗藏匿之处。I retired to my lair,and wrote some letters.我回到自己休息的地方,写了几封信。Green recounts ...
探求一般性和统一性,是二十世纪数学的突出特征之一.The search for generality and unification is one of the distinctive features of twentieth century mathematics.解题是一门艺术,统一性是数学固有的特点.Solution is an art. The unification is intrinsic characteristic o...