wedge-shaped gap

例句：

1. 1.The gap between the two countries is widening.
   两国之间的差距正在扩大。
2. 2. The gap in technology between developed and developing countries is significant.
   发达国家和发展中国家在技术上的差距是显著的。
3. 3. The gap between the rich and the poor is growing wider.
   富人和穷人之间的差距正在扩大。