One is in the U.S.at the Centers for Disease Control, where there is a sample of variola, which is kept, you know, frozen on ice in a heavily guarded facility.

一个在美国的疾病控制中心,那有一支天花病毒的样本,冰冻后置于重重保护之下

耶鲁公开课 - 生物医学工程探索课程节选

And it's dangerous. People slip and fall on the snow because it's made of ice.

这样也很危险，人们会在雪上滑倒，因为雪里面都是冰。

I'm glad 实战 - SpeakingMax英语口语达人

Some children bring all the tools they are on and one of the boys share he wants to bring a ice cream machine.

一些孩子画上了他们喜欢的所有工具,其中一个男孩,告诉大家他想带一台冰激凌机。

麻省理工公开课 - 媒体、教育、市场课程节选

I've been teaching long enough to know that doing derivations in class is equivalent to pouring ice water on the proceedings, so I do this sparingly.

我已经教了这么长时间书,所以我知道在课堂上讲推导,就好像泼冰水一样，所以我在讲这个的时候很小心。

麻省理工公开课 - 固态化学导论课程节选

There you would really think the formalists are on thin ice.

你会发现形式主义者的论点在这里如履薄冰。

耶鲁公开课 - 文学理论导论课程节选

So a closed system would be, for instance, a glass of ice water with an ice cube in it, with the lid on top.

因此闭系可以是，比如说，一杯放了,一个冰块的冰水，顶上加了盖子。

麻省理工公开课 - 热力学与动力学课程节选

Packs of ice were put on my forehead to keep down the fever.

冰袋放在额头上用来降温。

耶鲁公开课 - 1945年后的美国小说课程节选