一分为二
英文解释:
  1. n.  split across
  2. n.  cut in twain
  3. n.  A whole divides into two
  4. n.  Everything tends to divide into two
  5. n.  dichotomy
  6. n.  separation into or between two groups or things that are opposed, entirely different, etc
法文解释:
  1. n.  dichotomie, un divisé en deux