nibbler

例句：

1. 1.The cat nibbled on the mouse all night.
   猫整晚都在啃老鼠。
2. 2. The dog is a nibbler of bones and treats.
   这只狗是骨头和零食的啃食者。
3. 3. The little boy was a nibbler of sweets at school.
   这个小男孩在学校是个小甜点爱好者。