Have you ever asked yourselves why it is that companies, the really cool companies, the innovative ones, the creative, new economy-type companies -- Apple, Google, Facebook -- are coming out of one particular country, the United States of America?
在座的各位有没有问过自己， 为什么那些 很酷的公司， 那些有创意、懂创新的 新经济型的公司 — — 苹果、 谷歌、脸书— — 都来自同一个国家 美国呢？