1. Everyone knows that if he shouts in the vicinity of a wall or a mountainside, an echo will come back.
    大家都知道，在墙壁或山腰附近发出的喊声，就会听到回声。

2. Each person generates about 4.4 pounds of garbage a day — a number that has seen steady growth.
    每人每天生产的垃圾大约为4.4磅，这一数字仍在持续增长。

3. Before returning home at night, he took a shower and changed back into his suit.
    晚上回家前,他洗个淋浴,又换上他那套西装.

4. But, in addition to that basically simple concept, the bank and its customer owe a large number of obligations to one another.
    除了这一基本的简单的概念外，银行和储户彼此还需承担大量义务。

5. But other suns, stars as the astronomers call them, are bound to have planets like our own, and as the number of stars in the universe is so vast, this possibility becomes virtual certainty.
    但是，其他的太阳，既天文学家所说的恒星，肯定会有像我们地球一样的行星。因为宇宙中恒星的数目极其庞大，所以存在着产生生命星球的这种可能性是肯定无疑的。

6. 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。

7. Before we had time to worry about what might happen, we were back on the plain again.
    我们还未来得及担心后果，车已重新开上了平地。

8. Before returning home at night, he took a shower and changed back into his suit.
    晚上回家前，他洗个淋浴，重新换上那身黑色西服。

9. By January 10th, I was back to where I had started from.
    到了1月10日，我恢复了原来的作息时间。

10. Because the tree was mentioned in a newspaper, the number of visitors to Frinley has now increased.
    就因为报上提到过这棵树，所以现在来弗林利参观的人越来越多。

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