1. A dynamo is used to generate electricity.
    发电机用于发电。

2. Alexander Graham Bell was a teacher of the deaf. He did not know much about electricity.
    亚历山大·格雷厄姆·贝尔曾经当过耳聋学生的教师。他对电学所知甚少。

3. Portable boiling elements that can boil small quantities of water are useful when the right voltage of electricity is available.
    如果有相配的电压，可以煮少量水的便携式热水装置是有用的。

4. Powerfrugal systems would keep electricity usage low so that the demand on outside sources is low.
    节能系统能使用电量降低，因此对外来电力的要求比较少。

5. Mrs. Richards realized that it must be the man from the Electricity Board who had come to read the metre.
    理查兹夫人这才想到一定是供电局来人查电表了。

6. Millions of Mexico City´s people live in small shanties without running water or electricity.
    几百万墨西哥城的居民住在没有自来水和电的简陋的棚屋里。

7. Just add them straight onto the brain, and you save lots of time and money. And if you want to teach any other kind of skills, like electrical theory for electricity workers, well, there's a pattern for that too.
    把它们直接输入孩子的大脑就行了，这样你既省时又省钱。如果你想向孩子教授任何一种其他的技能，如教电工用的电气理论，那么，它同样有一套现成的头脑模式。

8. In Britain, Calder Hall on the coast of Cumberland first made its contribution to the National Electricity grid in 1957.
    在英国, 卡姆柏兰海岸上的考尔德豪尔电站在1957年首次为国家电网做出了贡献.