Where Euclid unconsciously assumed the infinitude of straight lines.欧几里得不自觉地假定了直线的无限性."I was very unsure of myself after the divorce," she says, unconsciously sweeping back the curls from her forehead.“离婚之后我变得非常不自信，”她边说边...
很多书现在都用盲文印.Books are now printed in braille.现在还有用布莱叶盲文印的书.There are books printed in braille.他懂得聋哑人交流用的“盲文”.He knew the finger alphabet, whereby the deaf and dumb communicate....
有一年冬天,情况糟透了,我们看见河水漫上低洼的草地.One bad winter we watched the river creep up the lower meadows.在那低洼的草地上,干草堆集如山.On the low meadow there are mountains of hay.数英里的泥泞难走的沼泽地向着内陆延伸,一直延伸到低洼的旱地地带.Landward, miles of rough grass marshes...