We become more energetic, more alert, better able to take effective action.

我们变得更有活力、更警觉、更有能力采取有效的行动。

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"More sleep in old age, however, is associated with better health, and most older people would feel better and more alert if they slept for longer periods," he said.

他说：“然而，老年人睡眠时间越长，身体越健康。如果他们睡得时间更长一些，大多数老年人会感觉更好、更有精神。”

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Consumers also tend to be more alert on the Internet.

消费者当然也倾向于在互联网上更加谨慎小心。

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This is more of a spoiler alert, but you've had 41 years to see this movie.

它不只是一个扰流警报，但是你用了41年来看这个电影。

哈佛公开课 - 计算机科学课程节选

As a manager, I should have been more alert and sensitive to my own symptoms.

FORBES: Is your employee suffering? Telltale signs of depression in the workplace

Local councils argue the changes would cut costs and ensure their staff are more alert.

BBC: Culture, media and sport questions

Early trials have already shown that the drug can make people more alert.

ECONOMIST: Cognitive enhancement