沉默如此深沉,以至于它在咆哮。
These are the times that try men's souls.
系统辨识是从观测到的输入输出数据中建立动态系统数学模型的科学与艺术。
Laws, in their most general signification, are the necessary relations arising from the nature of things.
La vida es corta pero ancha.
I love to sing, and I love to dance. I love to perform. That's who I am.