grub on

例句：

1. 1.She gnawed on the sandwich all morning.
   她整个上午都在啃三明治。
2. 2.The chef added a pinch of salt to the soup.
   厨师往汤里加了一点盐。
3. 3.We enjoyed the meal with some fresh herbs and spices.
   我们边吃边撒了些新鲜的香草和香料。