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1·It's the class break. Wang Yumu, 21, walks into the lecture theater where his girlfriend has been taking classes.

课间时分，21岁的王玉穆(音译)走进他女朋友正在上课的阶梯教室。

2·It is just down the hall from this lecture theater. And you bring the Periodic Table and the Table of Constants and a calculator and something to write with.

就在这件教室下面的大厅那，你们带上元素周期表和常数表，还有一个计算器和一些写的东西。

3·The director gave us a lecture on the theater.

那位导演给我们作过一次有关戏剧艺术的报告。