I stand up for what I believe in.

在学习结束时，我们知道物理学的所有过去，但对现在和未来一无所知。

The key to e-commerce success is understanding customer needs and delivering beyond their expectations.

Though debts are condemned in the financial world, the world of friendship and love may perversely depend on well-managed debts.

对所有生物的爱是人类最高尚的品质。