I find what you say most enlightening.你这一说,我心里头亮了.It is interesting and enlightening to consider the derivative of a vector.这对研究矢量的导数来说是重要的,而且富有启发性.Some of this history is not only interesting but enlightening from a sci...
正如火可以检验金子一样, 逆境也可检验人的勇气.Just as fire tries gold, so adversity try courage.和逞英雄相比,耐性更能检验人的品性.Endurance is a much better test of character than act of heroism.风浪考验艄公的胆量, 困难检验人的坚强.The wave tests the courage of the coxswain,...