v. bite or chew on with the teeth
v. 咬, 啃, 侵蚀, 消耗, 折磨
1. The dog likes to gnaw on its bone.
这只狗喜欢啃它的骨头。
2. She couldn't stop gnawing at the problem in her mind.
她无法停止在脑海中反复思考这个问题。
3. The constant worry began to gnaw at him.
持续的担忧开始让他感到烦恼。