No matter how hard it is, we will never give up.
Time does not heal all wounds, but it teaches us how to live with them.
Mathematics is a language that allows us to describe the indescribable.
过去是一个异国;他们在那里做事的方式不同。
“I give my whole water in joy,“ sings the waterfall, '' though little of it is enough for the thirsty。''