未被改变的

例句：

1. 1.The weather has remained unchanged since yesterday.
   自昨天以来，天气一直保持不变。
2. 2. The design of the new building is unchanged from its original concept.
   这座新建筑的设计与其原始概念保持一致。
3. 3. The company's policy on employee benefits remains unchanged.
   该公司的员工福利政策保持不变。