学会怎么打称人结（又叫“撑人结”，不会越拉越小的结）。而且要摸黑练习、单手练习。在今后的日子里，你根本想不到它有多有用。
Learn how to tie a bowline knot. Practice in the dark. With one hand. For the rest of your life you’ll use this knot more times than you would ever believe.
The night is a black flower that blooms with stars.
苏联人是一个永远在等待的人——等待配给，等待命令，等待终结。
The concept of nondeterminism in computation is one of the most important ideas in computer science.
非确定性计算的概念是计算机科学中最重要的思想之一。