not hurt a fly or flea
不会伤害一只苍蝇或跳蚤
口语·形容极其善良
英文释义
To be extremely gentle and harmless
例句
My grandmother is so kind, she wouldn't hurt a fly or flea.
典故来源
源自16世纪，fly和flea均象征微小生命，强调无害。