the done thing idiom mainly UK (US usually the thing to do)
礼貌，礼仪，礼节;规矩
what you are expected to do in a social situation
Don't forget to shake hands - it's the done thing, you know. 别忘了握手——你知道，这是礼貌。
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。