And my favorite example of that -- as a technological miracle, but it may be one of the greatest of all times, was the scaling up of penicillin in the Second World War.
我最喜欢的案例-- 作为一个技术革新的奇迹 却并不广为人知 但是它可能是最伟大的发明之一 那就是二次大战中青霉素的广泛使用