伟大的工程以你不理解的方式解决你未曾意识到的问题。
最好的科学是用头脑和心灵完成的。
Before I came here I was confused about this subject. Having listened to your lecture I am still confused. But on a higher level.
阈限性是两个阶段之间的过渡状态,个体既不属于这里也不属于那里,处于两者之间。