This is the 7258th most frequent Chinese word.
绵长
Continuous and lasting.
In this sentence, 绵长 describes the prolonged and continuous characteristic of the fine wine's aftertaste.
佳酿的余味绵长，让人回味无穷。
The aftertaste of the fine wine is lingering, leaving an unforgettable impression.
Here, 绵长 conveys the deep, enduring emotional quality of his speech.
他的演讲情感绵长，打动了每一位听众。
His speech was rich in emotion and resonated deeply with every listener.
In this instance, 绵长 describes the physical length and continuity of the mountain range.