★★★★★★Sources of Energy
Solar energy is one of the cleanest and most plentiful sources of energy. 80
太阳能是最干净和最充足的能量之一
solar energy = solar power 太阳能；one of +the形容词最高级+名词复述：最…的之一
→ e.g. Tony Stark is one of the richest people in the world. Tony Stark是世界上最富有的人之一
Solar power depends on sunlight, so in cloudy weather and at night, no power is generated/ˈdʒenəreɪtɪd/.
太阳能依靠太阳光，所以在阴天或者晚上，无法产生太阳能
depend on 依靠；generate 创造,产生；
Wind energy is non-polluting but is only useful in places where there is a lot of wind. 81
风能是没有污染的能源，但是要在有风大的地方才有用
wind energy 风能；non-：表示否定的前缀 → non-polluting 无污染的；non-alcoholic 不含酒精的；non-traditional 非传统的；non-smoking 无烟的；
Wind turbines/ˈtɜrbaɪnz/ convert the kinetic/kɪˈnetɪk/ energy of the wind into mechanical power.
风力涡轮机将风产生的动能转化为机械能
wind turbine 风力涡轮机；mechanical power 机械能；convert A into B 把A转化成B；kinetic energy 动能；
Nuclear energy is efficient and doesn't produce carbon gases as a waste product(产品). 84
核能非常高效，并且不会产生含碳气体这类的废弃物
nuclear energy 核能；efficient 高效的；carbon gases 含碳气体；waste product 废弃物；
The dangers of nuclear power include deadly radioactive/ˌreɪdioʊˈæktɪv/ waste products. 76
核能的危害包括致命的放射性废弃物
deadly (adj.) 致命的,致死的 → a deadly virus 致命的病毒；a deadly weapon 致命的武器；deadly radioactive waste products 致命的放射性废弃物；radio(放射的)+active(活跃的) → radioactive 有辐射的,放射性的；
A major source of energy comes from the burning of fossil/ˈfɑːsl/ fuels/ˈfjuːəlz/ , such as coal and oil. 82
一个主要的能量来源于化石燃料的燃烧，比如煤和石油
fossil fuel 化石燃料；burn 燃烧 → the burning of fossil fuels 化石燃料的燃烧；such as 例如,比如(一般接名词)；
【for example VS such as】
→ e.g. This app has many features. for example，it can make a dinner reservation. 这款软件有很多功能，比如说它可以用来订餐
I like sports，such as basketball，baseball and football. 我喜欢运动，比如篮球，棒球和足球
When we burn fossil fuels, waste gases such as CO2 are produced.
当我们燃烧化石燃料时，废气的气体就产生了，比如二氧化碳等
CO2 = carbon dioxide 二氧化碳；
Fossil fuels remain/rɪˈmeɪn/ the largest source/sɔːrs/of energy for most countries. 77
化石燃料的仍然是这些国家最大的能量
remain (v.)保持不变,仍然是 → remain+n. → e.g. It remains a secret. 这事一直是个秘密
→ remain+adj. → e.g. You have the right to remain silent. 你有权保持沉默
Hydropower comes from the kinetic energy of falling water. 75
水利发电是高处落下的水产生的动能
hydropower 水力发电；the kinetic energy of falling water 高处落下的水产生的动能；
Output is reliable and can be regulated/ˈreɡjuleɪtɪd/ to meet the demand, except during periods of drought/draʊt]/ .
水利发电的产出很稳定，可以调控以满足需求，除干旱时期以外
output(n.) 输出,产出 →input (n.) 输入,投入；reliable(adj.) 可信赖的,可靠的；
regulate(v.) 控制,调节 → e.g. My mother regulate how much TV I can watch.
meet(v.) 满足：meet the needs / requirements；动词不定式表示目的 to meet the demand 为了满足需求
except +名词/名词短语：除…之外；drought(n.) 干旱；
跟读1：Dams are expensive to build and affect wildlife/ˈwaɪldlaɪf/such as fish.坝造价昂贵，会影响鱼类等野生动物。86
跟读2：We need to reduce the use of fossil fuels to produce energy.我们需要减少使用化石燃料来生产能源。 87
复述1：One of the main problems we face is how to reduce the use of fossil fuels to produce energy. 78