The past is always changing. It is not fixed. The past is not stable.
几个世纪以来,印第安人发展了手语来传达人们感兴趣的现象。来自不同部落(FORTRAN,LISP,ALGOL,SNOBOL等)的程序员可以使用不需要他们在小马上扛黑板的程序员。
The future of energy is diverse, and we must be prepared to adapt and lead in this changing landscape.