我们都在阴沟里，但有些人却在仰望星空。
We are all in the gutter, but some of us are looking at the stars.
反馈是鲁棒控制系统的关键。
The goal of a strong fishery nation requires the joint efforts of the government, enterprises, and fishermen.
The best way to ensure peace is to maintain a balance of power among the major states.
The world is a book, and those who do not travel read only one page.
系统不是一个生产系统，而是一个消费系统。