However,each time a plant takes in one molecule of carbon dioxide gas, it loses hundreds of water molecules.

VOA: special.2010.01.26

There's the water phase, there's the ice cube is the solid phase, and there's some water, gas, vapor, and that's one bar.

里面放一块冰，这是固态；,于是我们得到了水，冰和水蒸气三态共存的点。

麻省理工公开课 - 热力学与动力学课程节选

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

His main targets were companies that supplied the public with water, electricity,and natural gas.

VOA: special.2010.08.05

Water heaters that burn natural gas create carbon monoxide.

VOA: special.2010.02.02

Police responded by using tear gas, water cannons, baton charges and rubber bullets to disperse the crowd.

VOA: standard.2009.09.01

They allege that the company's drilling polluted their water with chemicals,metals and methane, the main constituent of natural gas, causing explosions as well as gastrointestinal and neurological illness.

VOA: standard.2010.01.02

Bigger livestock herds are putting greater pressure on land resources and disrupting some ecosystems and the animals generate significant amounts of water and air pollution, including methane, a climate-changing greenhouse gas.

VOA: standard.2010.02.22