1. Even if a piped water supply is safe at its source, it is not always safe by the time it reaches the tap.
    即使管道供水系统在水源处安全的，等水到达龙头时就不一定总是安全的了。

2. Energy from nuclear power plants is steadily increasing but the problem of dangerous waste limits growth in many regions.
    核电厂提供的能源在稳步上升，但是在许多地区都因核电厂的有害废料问题而使发展受到限制。

3. Birds have the power to fly.
    鸟能飞。

4. Between twelve and eighty years we gradually lose this power;
    在12岁至80岁之间，我们逐渐丧失这种能力。

5. But it was also the era of Sputnik, of nuclear power and the green revolution.
    但这也是个卫星、核能和绿色革命的时代。

6. But after independence, leaders jealous to protect their power shut them out of politics,
    但是独立之后，领导者们惟恐失去自己的权力，将妇女排斥在政界之外。

7. But as a woman's power is still strongly perceived to be tied up with the ability to bear children, ageing demonstrates to the world her decline, her uselessness for her primary function.
    但由于女性的本领仍在很大程度上被看作与生育能力密切相关，年龄增长向世人显示的是她的衰老，就她的首要作用而言她已无用了。

8. Where alternative sources of power are available there are some marked contrasts in handling.
    凡是能源有选择余地的地方, 在处理方面有些显著的差别.

9. We must trace the source of these noxious gases before they asphyxiate us.
    在我们被这些有毒气体窒息之前, 必须查出其来源。

10. Where is the source of the Thames?
    泰晤士河源出何处？

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