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小朋友们在看飞机失事的新闻时,常常看到调查人员调查飞机失事的原因,总是首先考虑寻找“活证人”——黑匣子,这是为什么呢?
When looking at the news of the plane crash, the children often saw the reason why the investigators investigated the plane crash and always first looked for the “black card box” - why?