On the first day of class our professor explained to us that he was going to leave the subject matter of our talks up to us, but he was going to provide the motivation of the speech.

开课的第一天，教授向我们解释，他将把演讲的选题留给我们自己，但他会提供演讲的设定目标。

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"You know that it is the same way of thinking right down to the kids at Arsenal," he explained. "We all want to play the same way and that is the way the boss wants us to play."

你知道在阿森纳孩子们的踢球思维都是类似的，我们都希望踢出同一种风格，这也是教练所希望的。

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"Once we miss the deadline, we'll lose the opportunity to claim the territories that belong to us," he explained.

“一旦我们错过期限，我们将失去对本属于我们的领土宣示主权的机会。”他解释道。

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All of the productivity gains and economic growth achieved in the last 150 years, he explained, come thanks to inventions that are behind us: electricity, the internal combustion engine, indoor plumbing and heating, electronics and computers.

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Soon our newest amigo was introducing us to his cousins, all of whom, he explained, were eager to dance with us, a task made difficult by the fact that we were now holding onto a half-dozen bottles.

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He explained that it takes about 20 hours for such an EMP to reach Earth from the sun, giving us a window to react and prepare if the warning is timely enough.

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