1. The first essential in elephant training is to assign to the animal a single mahout who will be entirely responsible for the job.
    驯象中至关生要的是指派一名专门的驯象员，全面负责这项工作。

2. Today´s cities operate largely on a single plane — the ground.
    现在的城市主要在一个平面上活动——即地面。

3. The operation caught the imagination of the world, and there was a story that a television company offered a million dollars for one single photograph of Washkansky´s old heart.
    这一手术轰动了整个世界，据说一家电视公司曾出一百万美元的高价来购买沃什坎斯基原来心脏的一张照片。

4. The error was 44 minutes and 56 seconds for each leap year, or 11 minutes and 14 seconds for each single year.
    每个闰年的误差就是44分56秒或是每年11分14秒。

5. They, as a group of single women, were best friends, supported one another, and defined one another as "family".
    她们这个群体，个个单身，都是好朋友，互相扶持，彼此视作"家人"。

6. These two countries share a common border that runs for thousands of kilometers, with not a single soldier along the way.
    两国有几千公里的共同边界，在这条边界线上没有一个巡逻的士兵。

7. Riding on its air cushion over a single rail, which it never touches, at speeds up to 300 m.p.h.
    靠气垫在单轨上行驶而不接触轨道，时速可达每小时300英里。

8. No matter how hard I tried, it was impossible to fill this beautiful pen with ink and to this day it has never written a single word!
    然而不管我如何摆弄，那枝漂亮的钢笔就是吸不进墨水来。直到今天，那枝笔连一个字也没写过！

9. He must, for example, perceive an egg as a simple single solid shape, quite apart from its significance as food, or from the literary idea that it will become a bird.
    以鸟蛋为例。观赏者必须感觉到它是一个单一的实体形态，而完全不靠它的食用意义或它会变成鸟这样的文字概念来感觉。

10. He earned enormous sums of money and was paid as much as $100 for a single appearance.
    门多萨挣来大笔大笔的钱，一次出场费就多可达100英镑。