1. This physical transformation, plus the skill with which he executed it again and again, are surely the secrets of Chaplin's great comedy.
    这种对具体事物的发挥转化，以及他一次又一次做出这种转化的技巧，正是卓别林伟大喜剧的奥秘。

2. A transformation is occurring that should greatly boost living standards in the developing world.
    一个将会大大提高发展中国家生活水准的转变正方兴未艾。

3. Social and economic progress will grind to a halt and more and more jobs will be eliminated by the negative side of this transformation.
    社会和经济上的进步会慢慢停止下来，而且越来越多的工作岗位会因为这种改革的负面作用而消失。