• Due to a long period of separation from their family members, these "left-behind" people in far-flung underdeveloped regions have suffered certain psychological problems to some extent.

    由于家庭成员长期分离这些广泛分布不发达地区留守人口一定程度心理问题

    youdao

  • Jigging washing will be one of the major coal separation methods during a long period both at present and in the future.

    现阶段乃至今后相当长的时期内选仍主要选煤方法之一

    youdao

  • Jigging washing will be one of the major coal separation methods during a long period both at present and in the future.

    现阶段乃至今后相当长的时期内选仍主要选煤方法之一

    youdao

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