isolationist

例句：

1. 1. The government's policy of isolationism is causing a lot of problems.
   政府的孤立主义政策导致了很多问题。
2. 2. He was a solitary figure in the crowd, completely isolated from others.
   他在人群中是一个孤独的人，完全与其他人隔绝。
3. 3.The isolationist countries are often at odds with each other over trade issues.
   孤立主义的国家在贸易问题上经常发生冲突。