prolong
verb [ T ] uk/prəˈlɒŋ/ us/prəˈlɑːŋ/
C1 延长，拖延
to make something last a longer time
We were having such a good time that we decided to prolong our stay by another week. 我们过得非常愉快，决定再多呆一个星期。
She chewed each delicious mouthful as slowly as she could, prolonging the pleasure. 她细嚼慢咽，尽情地享受每一口美味食品。