1. Beneath his gruff exterior he´s really very kind-hearted.
    他外表粗鲁, 心地却十分善良.

2. 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。

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

4. 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。

5. Below are some predictions made by Richard N. Farmer, who gave his light-hearted opinion of the "World of 2084."
    下面是理查德 N·法默所作的一些预测，他以轻松愉快的心情为 “2084年的世界” 描绘了一幅充满妙趣的图画。

6. 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。

7. 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。

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. That evening he was in an unusually light-hearted mood.
    那晚他的心情异常轻松。

10. 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！

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