求翻译：Now, I know that it is fashionable in commencement speeches to be idealistic, and that may sound so, but at the root of my conviction is a strong sense of reality. Because you see, I don’t think we have a choice. We can sit on the sidelines, we can wring our hands, we can retreat into cynicism, and we know what the results will be: We will cede the field to those whose ideologies are absolutely anathema to people of conscience and faith all over the world. So our positive interdependence, which is a fact, will prepare us to meet these challenges. But they can no longer be seen just as government-to-government. There is a time and an opportunity, and with the new technologies available, for us to be citizen diplomats, citizen activists, to solve problems one by one that will give in to hard work, patience, and persistence, and will then aggregate to the solutions we seek.是什么意思？

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