 |
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| emission-free energy (Artjaazz) | |||
| green power (olyanick); enviro-power; pollution-free energy | |||
| nonpolluting energy | |||
| clean energy | |||
| экологически чистая энергия: 43 phrases in 7 subjects |
| Ecology | 1 |
| Energy industry | 27 |
| General | 5 |
| Nanotechnology | 6 |
| Natural resourses and wildlife conservation | 1 |
| Programming | 1 |
| United Nations | 2 |