让你的钱翻倍的最安全方法是把它对折一次然后放进口袋。
"The challenge in theoretical computer science is not just to solve problems, but to understand why they are hard to solve."
我所思念的美人,她在泰山。想追随她,但泰山支脉艰险。侧身东望,眼泪沾湿了衣襟。