The uniformity of the hybrids in the first generation, the dissimilarity in the second, are facts which cannot escape the attention of an accurate observer.
我们希望讨论脱氧核糖核酸盐的结构。这种结构具有相当生物学意义的新特征。
希望是一幅美好的早餐,但却是一顿糟糕的晚餐。
The biggest risk is not taking any risk at all.