It's nothing. Don't mention it.
区区小事，何足挂齿。
常用中文短句英文表达
第 52 部分
📚 句中词汇解析
从本句中提取的重要词汇
vt. 提到，说起;提名表扬;
n. 提及;
💡 ment思考，神智+ion名词后缀→有思考→想到，提到
"He did not mention the quarrel with his wife."
他没有提起和妻子的争吵。
近义：moot, name, paraphrase, quote, raise, tell
反义：overlook, preclude, pretermit, skip, unheed, blackball