In many parts of the world renewable energy is already a principal energy source.
在世界许多地方，可再生能源已经是一种主要的能源来源。
Wind is a clean source of renewable energy that produces no air or water pollution.
风是一种清洁的可再生能源，不产生空气和水污染。
Therefore, use of water source heat pump is clean and renewable energy as a technology.
所以说，水源热泵利用的是清洁的可再生能源的一种技术。
Chatty teenagers could be the world's next renewable energy source.
话多的青少年可能成为世界新一代可再生能源。
The fruit is a clean, renewable source of electrical power.
水果是一种清洁的可再生的电能资源。
No single renewable source is going to be the solution, absolutely not.
不会有单一一种再生能源会是最终的解答，绝对不会。
Hydropower is the world's largest source of renewable energy.
水电是世界上最大的可再生能源。
Hydropower is a clean, renewable, and environmentally friendly source of energy.
水电是一种清洁、可再生，且对环境友好的能源。
Water source heat pump; Renewable energy; energy saving; Environment harmless; Heating; Clean hot water.
水源热泵；再生能源；节能；环保；采暖；供冷；卫生热水。
Biomass is a renewable energy source existing in the nature.
生物质作为可以再生的能源广泛存在于自然界中。
Biomass is a renewable energy source existing in the nature.
生物质作为可以再生的能源广泛存在于自然界中。
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