以柳丝榆荚的从容反衬桃李的飘零，暗喻超然物外的态度

I'm not a pop star. I'm a performance artist.

翻译：天的运行刚健不辍，君子应当像天那样自强不息。

Understanding the computational complexity of learning problems is essential for developing efficient algorithms.

Without ecological balance, there is no real economic benefit.

法律是一种强制秩序。