Man needs difficulties; they are necessary for health.
人需要困扰,困扰是心理健康的必需之物。
The beauty of Shor's algorithm is that it shows how a quantum computer can solve a problem that is believed to be intractable for classical computers.
"I don’t have to be so afraid of good-bye, because good-bye doesn’t have to be forever."
写作是在一个世界中创造另一个世界。