1. The advent of fuel cell will also eliminate environmental pollutions because technically speaking, it is the cleanest form of energy.
2. It is publicly recognized as one of the cleanest on the road in China, achieving low emission targets while meeting customers'demands for power and performance.
3. I don't believe these officials are so ignorant that they do not know that solar energy is the cleanest source of energy.
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4. The competition selects the cleanest and softest quilts to promote filial piety in the town.
5. In China water quality is classified in five levels, with level one the cleanest and level five the most polluted.
6. The MTR there is the most efficient as well as the cleanest in the world, he said.
7. It's using the latest cleanest technology you can find in the world.
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8. Hong Kong undoubtedly is one of the cleanest cities in the world.
9. The two expats now working in Shanghai believe the local subway is definitely among the cleanest in the world.
10. The impact of reducing auto emissions is obvious, as Beijing is enjoying the clearest skies and cleanest air in years.