Make sure you have batteries that are in a good state of charge in your calculator.

确保你的计算器电池,处在一个良好的状态。

麻省理工公开课 - 固态化学导论课程节选

And other classes are completely closed book. You can't bring anything into it, even a calculator, so.

而有些课的考试是完全闭卷考试。考试时什么都不能带，甚至计算器都不行。

考试应该这么准备 - SpeakingMax英语口语达人

And on Friday in class, at the beginning of class, I'll go over just in all the detail you could possibly imagine everything you need where it is, what you do, what kind of calculators you can bring, which by the way are any calculator.

在周五那节课开始的时候，我会详细地告诉大家,你们所能想到的,在哪考，你要做什么，什么样的计算器可以带，顺便一提的是，什么样的计算器都可以。

麻省理工公开课 - 化学原理课程节选