如果一个交互式计算机屏幕要在实用性上与白板相匹配，它必须在手臂长度范围和横跨房间范围内是可视的。

If an interactive computer screen is to match a whiteboard in usefulness, it must be viewable from arm's length as well as from across a room.

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因此，必须显式地请求这些数据。

Therefore you have to explicitly request this data.

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在这种情况下，必须显式地定义它。

In that case, you have to define it explicitly.

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To try to answer those questions we would have to look a little bit at what is meant by this new kind of Socratic citizen.

若要回答这些问题,我们必须探讨一下,新型苏格拉底式公民的定义。

耶鲁公开课 - 政治哲学导论课程节选

The press started writing a lot about Trans fats and then the government required Trans fats to be shown on labels, and then the food industry really had to pay attention and a lot of them started taking out Trans fats.

新闻开始大量报道反式脂肪,政府则要求内含则必须在标签上注明,这才真正引起了食品业的重视,许多厂商开始剔除反式脂肪

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选