[no obj.]bite at or nibble something persistently 咬,啃,啮 picking up the pig's foot, he gnawed at it. 他拿起猪蹄啃起来。 ■[with obj. and adverbial]bite at or nibble (something) until it reaches a specified size or state 咬成,啃成 she had gnawed her fingers to the bone. 她已经把手指咬得见了骨头。 ■(figurative)(of something painful to the mind or body) cause persistent and wearing distress or anxiety (喻)烦扰;折磨 the doubts continued to gnaw at me. 这些疑问一直折磨着我。 [as adj. gnawing]that gnawing pain in her stomach. 她那折磨人的胃痛。
派生 gnawingly adverb 语源
Old English gnagen, of Germanic origin; related to German nagen, ultimately imitative