在上学的路上，汤姆经过一个操场。

On his way to school, Tom passed by a playground.

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八岁时，她开始为建造一个操场筹集资金。

At age eight, she started raising money to build a playground.

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遵照这些政策，这所小学在其中一个操场上开设了“农业课基地”。

Following these policies, the primary school launched an "agricultural class base" on one of its schoolyards.

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Or a football player--when you're running down the field, why did you go to this way instead of that way ? when you're running down the field?

或者是问一个橄榄球运动员--当你在操场上奔跑时，你为什么要往这边跑而不是那边呢,当你在操场上跑的时候？

耶鲁公开课 - 金融市场课程节选