The dog was gnawing a bone.

那狗在啃骨头。

The problem had been gnawing at him for months.

几个月来这个问题一直折磨着他。

Fear and anxiety were gnawing her.

恐惧与焦虑折磨着她。

He sat there gnawing the biscuit.

他坐在那边“咔嚓咔嚓”地啃着饼干。

My money problems are gnawing away at me.

钱的问题时刻困扰着我。