咀嚼

例句：

1. 1. I chewed on the cud of my dog's food.
   我咀嚼着狗的食物。
2. 2. The children were chewing gum during lunch break.
   午餐休息时，孩子们在嚼口香糖。
3. 3. The old man chewed his tobacco with a long pipe.
   老人用长管烟斗抽着烟。