The main light source of the future will almost surely not be a bulb. It might be a table, a wall, or even a fork.

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问题 The main light source of the future will almost surely not be a bulb. It might be a table, a wall, or even a fork.  
  

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答案从1996年开始,随着这些国家在制造业出口市场上面临来自中国和墨西哥越来越强的竞争,危险信号变得清晰可见。

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