Definition
what one is expected to do in a particular social situation, often considered to be proper or polite behavior.
强调社交场合上应该遵守的礼节或规矩
Wearing formal attire to a wedding is the done thing.
在婚礼上穿着正式服装是合宜之举。
Tipping is the done thing at this restaurant.
在这家餐厅给小费是礼貌之举。
Writing a thank-you note after receiving a gift is the done thing.
收到礼物后写一封感谢信是合宜之举。