a. not made or become different
a. 无变化的
[经] 持稳的
1. The prices of the products remained unchanged despite the economic changes.
尽管经济发生了变化，产品的价格依然保持不变。
2. Her feelings for him have remained unchanged over the years.
多年来，她对他的感情没有改变。
3. The schedule for the meeting is unchanged from last week.
会议的日程与上周保持不变。