mash

You need to mash the boiled potatoes thoroughly until they are smooth and creamy.

(Chinese) 你需要将煮熟的土豆彻底捣碎，直到它们变得丝滑。

She used a fork to mash the ripe banana for the baby's breakfast.

(Chinese) 她用叉子把熟透的香蕉捣碎，给宝宝当早餐吃。