collocation | frequency |
---|---|
energy system | 4 |
climate change | 3 |
clean energy | 3 |
fossil fuel | 2 |
fuel infrastructure | 2 |
gas stations | 2 |
fossil energy | 2 |
power plant | 2 |
ensuring people | 2 |
coal mining | 2 |
united states | 2 |
collocation | frequency |
---|---|
fossil fuel infrastructure | 2 |
clean energy system | 2 |