1. By the end of the next century, a single city may have more than 100 million inhabitants.
    到下个世纪末，一个城市的居民就可能超过一亿。

2. Behold her, single in the field,
    看她，一个人在原野上，

3. But there were times when not a single piece of dry wood could be found and even Humboldt lay with his eyes wide open, listening to the roars of the beasts that surrounded them.
    但也有一块干木也找不到的时候，就连洪堡也睁大了眼睛躺在那里，听着包围他们的野兽的吼叫。

4. Before all the different types of Barbie dolls for sale now, there was just a single Barbie.
    在现今各式各样的芭比娃娃出售之前，原只有一种芭比娃娃。

5. But a single optical fiber with a diameter of less than half a millimeter can carry more information than a large cable made of copper wires.
    但是单单一根直径小于半毫米的光纤电缆就可以比由铜丝制成的粗电缆负载更多的信息。

6. What the child cannot forgive is the parent´s refusal to admit these charges if the child knows them to be true.
    孩子们所不能原谅的是：父母错了，孩子们也看出来了，可是做父母的还不肯承认。

7. We can now not only choose our marriage partner, we also can divorce that partner at will, subject children to our own adult worship of happiness, and deny the other parent any regular contact with their children.
    现在我们不仅可以选择配偶，也可以任意与其离婚，将我们成人对幸福的崇拜置于孩子的利益之上，也可以阻止另一方与孩子有任何经常性的来往。

8. They had a single aim, a solitary goal-the top!
    他们有一个目的, 唯一的目标就是登上顶峰.

9. They had a single aim, a solitary goal----the top!
    他们只有一个目标，唯一的目标 -- 顶峰！

10. The adolescent, with his passion for sincerity, always respects a parent who admits that he is wrong, or ignorant, or even that he has been unfair or unjust.
    青少年酷爱真诚，对于能够承认错误或无知、甚至承认自己做得不分平或不公正的父母，他们总是尊敬的，