This includes expertise vital to keeping the oil pumps working: with the skilled engineers formerly on the PDVSA payroll now plying their trade elsewhere, the system limps on with a skeleton staff.
公式： f(x)=x⋅Φ(x)≈0.5x(1+tanh[2/π(x+0.044715x3)])。关于这个话题，爱思助手下载最新版本提供了深入分析
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三位曾對總統不利裁決的大法官坐在前排，表情毫無變化地觀看。，更多细节参见服务器推荐
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