数学的美在于它是永恒的,它不会改变。
The beauty of mathematics is that it is eternal, it doesn't change.
理解就是感知模式。
You can't look back, you just have to put the past behind you and find something better in your future.
每回收一吨纸就能拯救17棵树,这不仅是生意,更是留给后代的遗产。
我们的教学方法只有一个,就是必须维持孩子们的高度兴趣和强烈持续的注意力。
I just want to make music that makes people happy.