When you cross the river, do not walk on the ice.

VOA: special.2010.06.26

The partial pressure of the water, of gaseous water above that equilibrium of ice and water is not one bar, it's much less.

哪里错了吗？,问题在于,冰水混合物上方的,大气中水蒸气的分压，不是一个大气压。

麻省理工公开课 - 热力学与动力学课程节选

I don't think anybody's obliged to eat or not to eat strawberry ice cream.

没有谁有这个义务非得要吃,或者不吃草莓冰淇淋。

耶鲁公开课 - 心理学导论课程节选

The fast-paced sport of ice hockey is thrilling when there is a tightly-played contest, but that is not what spectators observed in each of the opening women's games contested by Canada and the United States.

VOA: standard.2010.02.15