"It has been a real struggle to find new sponsorship and keep old sponsorship.

VOA: standard.2010.02.21

For real gases, there's a whole bunch of equation the states that you can find in textbooks, and I'm just going to go through a few of them.

这是理想气体的状态方程,对实际气体,你可以在教科书里，找到许多描述它们的,状态方程。

麻省理工公开课 - 热力学与动力学课程节选

That made some populations mobile because they had to move from place to place to find food, but of course, it made starvation a very real possibility.

那样使得部分人口开始流动,人们不得不不断地迁徙,寻找食物,当然 自然灾害也造成了饥荒

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选