Beauty is an attitude. It has nothing to do with age.美是一种态度，与年龄无关。The best thing to do when entering unknown territory is smile.踏入未知地带最好的对策就是微笑。Failure is never quite so frightening as regret do.比失败更令人恐惧的是懊悔。...
可以实验测定氘的结合能.The binding energy of the deuteron can be found experimentally.更为活跃的是氢的较重同位素, 氘和氚.More reactive are the heavier isotopes of hydrogen, deuterium and tritium.对于单晶,氘化的这种优点并不是必不可少的.This advisability of deuteratio...
The nearer of the two barges was perhaps a mile away.两艘驳船中较近的那艘可能有一英里远.We are no nearer agreement now than in the past.我们现在和过去一样，还是不能达成一致意见。As we drew nearer to it the water gradually deepened.我们靠近它时，水渐渐深了起来。...