Says he would promote market for alternative, low carbon fuels such as wind, hydro and solar power and would work to create a system of tax credits to develop such sources.

说他将促使市场转向诸如风能、水力和太阳能等替代性的低碳燃料，并将致力于创建一个税收优惠系统，以开发这些能源。

youdao

President Obama says the Summit of the Americas yielded broad hemispheric agreement on the need to spur economic growth, confront security challenges like drug trafficking, promote alternative fuels, protect the environment, and ensure human rights.

VOA: standard.2009.04.19