gnaw at
v. 侵蚀, 咬, 折磨
例句与用法:
Her mistake gnawed at her conscience.
她的错误折磨着自己的良心。
The dog was gnawing at a bone.
狗在啃一根骨头。
词形变化:
名词: gnawer | 动词过去式: gnawed | 动词过去分词: gnawed | 动词现在分词: gnawing | 动词第三人称单数: gnaws |