心不在焉（或“出神”、“开小差”）可以保护你免受直接伤害，有助于你达成长期目标。有时做白日梦是想非所想，但是有时候它却蕴含创造力，有助于你解决问题。
Sometimes daydreaming is counterproductive, but sometimes it fosters creativity and helps you solve problems.
别人同你讲话时出心不在焉是没礼貌的。
It is bad manners to be absent-minded when other people talk to you.
你有没有想过自己是一位有在思考的电视观众，还是心不在焉坐著都不动的人？
Did you think yourself as a thinking TV viewer, or just a mindless couch potato?
布兰克教授太心不在焉，你会以为他脑子空空的，但是你去听了他的讲座之后你就知道为什么大家都说他是他那一领域的天才。
Professor Blank is so absent-minded you think he doesn't have both oars in the water. But when you go to his class and listen to his lecture, you know why everybody says he's a genius in his field.
布兰克教授太心不在焉，你会以为他脑子空空的，但是你去听了他的讲座之后你就知道为什么大家都说他是他那一领域的天才。
Professor Blank is so absent-minded you think he doesn't have both oars in the water. But when you go to his class and listen to his lecture, you know why everybody says he's a genius in his field.
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