gnawing
v. 咬，反复啮咬；咬成……；烦扰；侵蚀（gnaw 的现在分词）
adj. 折磨人的，令人痛苦的
n. 咬；不断的苦痛
例句
The dog was gnawing a bone.
那狗在啃骨头。
《牛津词典》
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。
