不可言说之物是剧作家的领域。
"The unspeakable is the playwright’s territory."
The most beautiful things in life are free.
"The act of writing is an act of optimism. You would not take the trouble to do it if you felt it didn't matter."
I’m a perfectionist. I’m pretty much detail-oriented.
系统辨识的挑战不仅在于拟合数据,还在于提取有意义且可推广的模型。