The symmetry properties of a physical system are reflected in the degeneracy of its energy levels.
物理系統(tǒng)的對稱性反映在其能級的簡并性上。
The future of farming lies in our ability to balance productivity with environmental responsibility.
The first fruit of this imagination—and the first lesson of the social science that embodies it—is the idea that the individual can understand his own experience and gauge his own fate only by locating himself within his period, that he can know his own chances in life only by becoming aware of those of all individuals in his circumstances.
The key to solving complex problems is to break them down into manageable pieces.