假如一个问题对你来说太狭窄，或者只包括一个讲座或一本书籍，别被扔下了。
Don't be thrown if a question seems to you too narrow or covers only one lecture or book.
回答问题，不要只说“是”或者“不是”，但也不要一个问题说太久。
Give more than "yes" or "no" answers but don't talk for too long either.
英国的两位女士只在夜晚或者是早上出现了神秘的视力问题，结果是由一个相当无伤大雅的原因引起的的——那就是在黑暗中看手机。
For two women in the United Kingdom, mysterious vision problems that happened only at night or early in the morning turned out to have a rather innocuous cause: looking at a smartphone in the dark.
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