At the end of March, President Obama called for the United States to expand its offshore oil and gas exploration.

VOA: special.2010.05.01

Hydrogen gas it's in its most stable state, right at room temperature and pressure.

和常压下氢气是氢元素，最稳定的状态，这个小“0“

麻省理工公开课 - 热力学与动力学课程节选

And so an experiment said the gas didn't increase its temperature when it expanded the vacuum.

这个实验告诉你,气体在向真空膨胀的过程,中温度没有升高。

麻省理工公开课 - 热力学与动力学课程节选

Alaska's wealth in oil, natural gas,trees,fish and animal skins makes its purchase one of the greatest deals any country ever made for territory.

VOA: special.2010.02.11

So, for example, in an electrochemical cell, it would be possible to take the sodium ion, give back its electron, and convert it into a metallic sodium, take the chloride ion, remove its electron, and restore chlorine gas.

所以，例如一个电化学的电池，它可能带有钠离子，让它得到电子，把它变成金属钠，得到氯离子，让它失去电子，作为氯气储存。

麻省理工公开课 - 固态化学导论课程节选

Maya Lin's "Ecliptic" outdoor area in Grand Rapids,Michigan features water in its three states: liquid,gas and solid.

VOA: special.2009.05.06

China is particularly keen to secure supplies of oil and natural gas to fuel its rapidly expanding industries.

VOA: standard.2009.10.13

But Russia recently called into question Ukraine's ability to pay its December natural gas bill.

VOA: standard.2010.01.01

India hopes a massive increase in cleaner nuclear power will help it to check greenhouse gas emissions and cut its dependence on oil, most of which it imports.

VOA: standard.2009.09.29

Britain is cutting down on its industrial gas use to save supplies.

VOA: standard.2010.01.10

So when the automaker announced plans to stop selling millions of its cars in the United States and Europe last month because of gas pedal defects, the Japanese were concerned.

VOA: standard.2010.02.15

The bill's sponsors say that by putting a price on carbon released into the atmosphere, the measure would help reduce America's reliance on fossil fuels and cut its greenhouse gas emissions.

VOA: standard.2010.06.14

In December, Russian President Dmitri Medvedev criticized Rosneft, the state run company that owns the world's largest oil and gas reserves, for spending only of its revenues on research and development.

VOA: standard.2010.02.03

The Clinton visit was not without discord, with India saying flatly Sunday it intends to stand firm against western demands that it accept binding limitations on the growth of its greenhouse gas emissions.

VOA: standard.2009.07.20

"There is a realization at the end of the day that despite all the profits that Russia got from its sale of oil and gas over the last 10 years, that unless it modernizes its economy and reforms it, it will be a declining power."

VOA: standard.2010.06.18