water off a duck's back
美
英
- 网络鸭背的水珠；对牛弹琴；毫无作用
un. | 1. used for saying that things such as criticisms or insults do not affect someone because they have dealt with a lot of them before |
| 单词 | water off a duck's back | ||
| 释义 | water off a duck's back美 英
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