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。

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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。

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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。

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4. 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。

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