They said developed nations had to set targets to curb greenhouse-gas emissions before they would negotiate on other issues.

VOA: standard.2009.11.04

Because only atomic hydrogen has that set of lines which means I could then take the spectra of gas phase species and use that information to identify.

我在这抬头看看然后离开，那就是氢原子,那就意味着,我可以测定,气相种类的光谱并且运用那个信息来鉴定。

麻省理工公开课 - 固态化学导论课程节选

The main goals of the summit are to agree on targets to cut to greenhouse-gas emissions and to set up a mechanism to provide developing countries with the billions of dollars needed to cope with climate change.

VOA: standard.2009.12.17

Natural gas prices set the price of electricity so now, with gas prices relatively low, the target is small.

FORBES: REC Chief Sketches Tortured (But Possible) Path To Solar Grid Parity

"Targets on reductions in greenhouse gas emissions set by the Executive are also now well on track to be met, " he said.

BBC: NI greenhouse gas emissions fall

Demand for natural gas is set to rise in the U.S. as power plants and the industrial sector increase their consumption of the fuel.

FORBES: Kinder Morgan Doubles Down On Shale With Copano Acquisition