过去式：gnawed 过去分词：gnawn 第三人称单数：gnaws 现在分词：gnawing
1.咬,啃;咬断
2.使腐蚀;侵蚀;消耗
3.使苦恼,折磨
4.咬,齿啃 (at; into)
5.侵蚀,消耗
6.折磨,苦恼
1.to keep biting something
gnawngnawngnawn