"Food price volatility,growing population, water scarcity and climate change.

VOA: special.2011.05.03

You need a functional form that connects the value at one state of matter, the freezing point of water to another phase change, the boiling point of water.

你需要一个函数形式来,连接物质某个态对应的温度值，如水的冰点，和另一个相变,如水的沸点。

麻省理工公开课 - 热力学与动力学课程节选

So, for instance, if you take a glass of water and you pour it into another glass that's shallow or tall, it won't change the amount of water you have.

比如说,你有一杯水,将水倒进另一个更浅或者更深的杯子里,含水量并未发生任何改变

耶鲁公开课 - 心理学导论课程节选

"Kids really get engaged in science in the garden where it's a kind of fun activity where they're collecting data and seeing how different temperatures will change the amount of water that's needed by a crop, so the science concepts come easily."

VOA: special.2011.06.14

For example, she says millions of people will suffer from either too much water or too little water under climate change.

VOA: standard.2010.01.02

But nature plays a role as well. As for climate change, severe water shortages are predicted to affect between 75 and 250 million people by 2020.

VOA: standard.2010.03.29

In the end,all there will be is a giant puddle of water, the bronze skeleton and plaques a kind of testimony to the crisis of climate change.

VOA: standard.2009.12.13

"Darfur also provides the unique opportunity for donors and development program managers to deal with some of the most pressing global issues - like globalization,desertification, water management and climate change - in a holistic way and manner."

VOA: standard.2010.03.21

looked at things like where should they locate waste water treatment facilities because of the impacts of climate change, what risks are likely to occur to their subway system because it's underground and already requires enormous pumping of water during certain large rainfall events."

VOA: standard.2010.06.14