The past is always there, but it's not the only thing that's there.
市场的效率往往取决于信息传递的好坏。
I'm not afraid of storms, for I'm learning how to sail my ship.
学习数学的唯一方法就是做数学。
As we delve deeper into the quantum world, we find that topology is not just a mathematical curiosity, but a fundamental aspect of nature.