Sources of energy

Solar energy is one of the cleanest and most plentifuf sources of energy.

Solar power depends on sunlight ,so in cloudy weather and at night, no power is generated.

太阳能依赖于阳光，所以在多云的天气和夜晚，不会产生电力.

Wind energy is non-polluting but is only useful in places where is a lot of wind.

Wind turbines convert the kinetic energy of the wind into mechanical power.

风力涡轮机将风能转化为机械能。

kinetic energy(动能)--- of the wind

mechanical power（机械功率、机械能）

Neclear energy is efficient and doesn't produce carbon gases as a waste product.

efficient: 效率高的;有能力的

The dangers of nuclear power include deadly radioactive waste products.

核能的危险包括致命的放射性废物。

A major source of energy comes from the burning of fossil fuels, such as coal and oil.

一个主要的能源来源是燃烧化石燃料，如煤和石油。

When we burn fossil fules, waste gases, such as Co2 are produced.

Fossil fuels remain the largest source of energy for most countries.

Hydropower comes from the kinetic energy of falling water.

水力发电来自落水动能。

Output is reliable and can be regulated to meet the demand , except during periods of drought.

产量是可靠的，可以调节以满足需求，除了干旱时期。

regulate: 约束，控制，管理;调节，控制

Dams are expensive to bulid and affect wildlife such as fish.