4 Nothing for nothing. 不费力气,一无所得。
Wu Shixun, you are the only. 吴世勋,你是唯一。
To go beyond is as wrong as to fall short. 过犹不及。
For something,we can't understand when we are young but by the time we understand,we are no longer young. 有些事情,当我们年轻的时候无法懂得,当我们懂得的时候已不再年轻。