1. Eletricity must be generated by the consumption of coal or oil
    发电需要消耗煤或石油.

2. Each of the sides of the pyramid is 755 feet long, or about as long as two city blocks.
    每一边长755英尺，大约有两个街区那样长。

3. Even so, Mexico City continues to look good to the rural people who pour into the city.
    虽然如此，对拥入该城的乡村农民来说，墨西哥城仍是个好地方。

4. Electricity for the city would come from many sources, including the burning of trash from the city´s refuse collections.
    十亿人口城市的用电将取自多种来源，包括燃烧城市中收集的垃圾。

5. Every time a packet left her hands, the hateful yellow face of the officer who had taken her son away flared up in her mind.
    每当一小捆传单从她手中发出去时，她的脑海中就会闪现出那个把她儿子带走的军官那张可恶的黄色的脸。

6. Bill: Wow! You´re right! That´s really funky You´re got some growth on your face, too, don´t you?
    比尔:噢!你说得对!那真是独特!你脸上也长些东西,不是吗?

7. By way of contrast oil can be transported large distance by pipeline.
    不同的是, 石油可以用输油管远距离输送.

8. But we do not need to send men down to get the oil out, as we must with other mineral deposits.
    但是，我们不必像开采其他矿藏那样，把人送到地下去把石油取出。

9. Because of this, we kept looking back, wondering if we were leaving a trail of oil and petrol behind us.
    因此，我们不时地掉过头，怀疑车后是否留下了机油和汽油的痕迹。

10. 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。

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