it's a pleasure idiom (also it's my pleasure)
不客气
a polite way of replying to someone who has thanked you
"It was so kind of you to give us a lift." "Don't mention it - it was a pleasure." “你真是太好了，让我们搭车。”“这没什么，不用客气。”
江苏热线英汉汉英双解词典包含207361条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。