radical of a quadratic space

例句：

1. 1. The radical difference between the two ideas is that one promotes progress and the other hinders it.
   这两种观念之间最根本的区别是，一种促进进步，另一种阻碍进步。
2. 2. The radical changes in technology have revolutionized the way we live.
   技术的根本变革已经彻底改变了我们的生活方式。
3. 3. The radical shift in political power has led to a new era of governance.
   政治权力的根本转变已经导致了一个新的治理时代。