Please be advised that, at most times, they make more or less promotion in the process of imitation. That attributes to their "豐厚的知識和智慧儲備". Otherwise, they even could not imitate, right?
What do you mean by "美國如果封鎖技術"? Do you mean USA expelled all alien scientists and engineers? Then American scientific power would collapse first. And, it would become far easier for Chinese to surpass.
看看吧：
President Trump says he is ready to declare the nation's opioid crisis "a national emergency," saying it is a "serious problem the likes of which we have never had，" citing an overdose death rate of 142 a day.
我剛來美國時，我的導師幾個小孩子都在中、小學讀書。我問他小孩去學校最重要的是什麽。他回答：公民意識，organize, and social skills. 我當年不理解。現在我回中國，看到滿街無序的交通，誰也不願遵交通規則，各種奇怪、想不到的不安全食品，深深體會到國家中小學教育的最根本應是公民教育，文化在其次。
現在中國年輕人的中文程度很差，走進書店，看到的是“成功學”的商業書籍占主流。過去幾十年，中國有多少真正的文學作品？而美國的圖書館，架上的新書每月不停的換，好的文學作品，傳記文學很多。而且是“白人”們在那勤奮讀書，而且是讀閑書，不為職業…
Forest Park, St. Louis, Missouri 