translation.en: So we've got to rethink sanitation, and we've got to reinvent the sanitation infrastructure, and I'm going to argue that to do this, you have to employ systems thinking.
translation.zh: 因此我们必须重新想一想卫生问题， 我们必须改造卫生基础设施， 我正打算说服人们去做这些， 你必须采用系统的思考。