学习是系统中产生的任何变化,这些变化或多或少会永久性地改变其适应环境的能力。
I'm stronger than I thought.
Transparency isn't just good ethics; it's good business. Consumers deserve to know where their food comes from and how it's produced.
花朵总能让人们变得更好、更快乐、更乐于助人;它们是心灵的阳光、食物和良药。