有一个关于一个乐观者和一个悲观者的著名而古老的故事。

There is a famous old story about an optimist and a pessimist.

youdao

下面就让我们一起，尝试去破解乐观者和悲观者的成功密码。

Let's together, try to crack and pessimistic optimist successful password.

youdao

下面就让我们一起，尝试去破解乐观者和悲观者的成功密码。

Let's together, try to crack and pessimistic optimist successful password.

youdao