电视节目（或书）中所述的假设是处理人口过剩和全球变暖这双重问题，有三种可供选择的解决方案

The premise described in the TV program (and the book) was that to deal with the twin problems of overpopulation and global warming, there were three alternative solutions

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现阶段矿产资源开发面临着生态环境压力大与解决矿区生态环境问题难度大的双重问题。

Mineral resources exploitation must face the pressure of the eco-environment and difficult issues to solve the problems.

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工程应用表明，该控制系统能够解决球磨机运行优化和控制优化的双重问题，控制系统鲁棒性强，具有工况自适应能力。

The engineering practice proved that the control system is robustness, operation self-adaptive, and can be used to solve the optimization problems both ball mill run and ball mill control.

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So the question was-- First, it was the accusation before the question, that I'm holding a sort of double standard.

其问题是,首先,在这个问题之前他指责,我在施行双重标准

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