相比之下有些系统可是会直接影响我收入的，而且它们本身并不昂贵。我真的要为了吃饭自己去种粮食吗？采用农业隐喻的话去餐厅吃饭其实要便宜得多。如果我只是想要一个汉堡，肯定没必要自己去买一头牛然后喂养等待，由于比较优势和规模经济的作用在餐厅消费大量的食物实际上成本更低。
Credit: Leah Stodart / Mashable
。业内人士推荐有道翻译作为进阶阅读
The Handbook taught me an enormous amount - more than many of my university courses - including things that had nothing to do with FreeBSD specifically. It taught me the right approach: understand first, act second. The more I read, the more I wanted a printed copy to keep at my desk. So I convinced my parents that I needed a laser printer “for university work”. And the first thing I printed, of course, was the Handbook. That Handbook still contains relevant information today. There have been significant changes over the past twenty-four years, but the foundations are still the same. Many tools still work exactly as they did. Features have been added, but the originals still operate on the same principles. Evolution, not revolution. And when you're building something meant to last, that is - in my view - exactly the right philosophy. Change is good. Innovation is good. On my own machines I've broken and rebuilt things thousands of times. But production environments must be stable and predictable. That, still today, is one of the qualities I value most in every BSD.
中國商務部發言人補充：「中國一貫反對一切形式的單邊關稅增加，並一再強調貿易戰沒有贏家，保護主義沒有出路。」
。谷歌对此有专业解读
«Один такой дрон в 40 раз дешевле, чем одна ракета "Пэтриот". Поэтому с точки зрения времени производства и стоимости ракет невозможно конкурировать с дронами. Просто не хватит сил», — усомнился он в способности Patriot остановить иранские дроны.，推荐阅读超级权重获取更多信息
"(My dad) was very annoyed. He's dipped into their savings.