expansion gap

例句：

1. 1. Thecompany's expansion gap has been amajor concern for investors.
   该公司的扩张差距一直是投资者们关注的重点。
2. 2. Thegovernment needs to address thedevelopment gap between urban and ruralareas.
   政府需要解决城乡之间的发展差距问题。
3. 3. The gap between the rich andthe poor is widening, which isa serious problem.
   富人和穷人之间的差距正在扩大，这是一个严重的问题。