No individual has any right to come into the world and go out of it without leaving behind him distinct and legitimate reasons for having passed through it.

下一次绿色革命必须既高效又对环境负责。

劳动力市场的运作取决于供求关系。

成为一名作家就是成为一名专业的观察者。

有些人感受雨，而其他人只是被淋湿。