You have to reject one expression of the band first before you get to the next.
数据是宝贵的东西,它将比系统本身更持久。
You cannot step into the same river twice.
科学家必须有勇气捍卫自己的思想,即使它们不受欢迎。
Without science, aquaculture stagnates; without ethics, it collapses.