✔ 最佳答案
1 lower carbon emissions
To reduce the release of carbon dioxide gas into the atmosphere.Nowadays, the human sector mainly release carbon dioxide in electricity-generating process, when we combust fossil fuels to drive the generater. Therefore, lower carbon emissions is likely to refer to reduce the energy-consumption rate and to develop other non-carbon-dioxide-releasing power source.
2 renewable sources
They are sources which consumption rate is lower than the production rate, i.e. can recover before it runs out. For energy sectors, it may refer to solar energy, wind power, etc.