An in-group is a small set of people who feel they belong together. They like the same things, are friendly with each other, and quietly — or not so quietly — keep other people out. You hear it about a class, a club, a workplace, or a family circle: the people on the inside.

An in-group isin-group 指的是 a small set of people who feel they belong together一小群覺得彼此屬於同一國的人。They like the same things他們喜歡一樣的東西、are friendly with each other彼此友好，and quietly — or not so quietly然後不動聲色——或根本毫不掩飾—— keep other people out地把其他人排除在外。You hear it about你會聽到這個詞用在 a class班上、a club社團、a workplace職場、or a family circle或家族圈子上：the people on the inside指的就是圈子裡面的人。

In school talk it is close to a clique.

In school talk在學校裡的說法，it is close to a clique很接近 clique（小圈圈）這個詞。

Though actually teachers and books also use it as a more serious idea: we treat “our” group better than outsiders, even when we do not notice we are doing it. It can sound a little like classroom or news English; in daily talk people may just say “their little group” or “the inner circle.” The feeling is “us, not you.”

Though actually不過其實，teachers and books also use it老師和書本也會用這個詞 as a more serious idea來講一個更嚴肅的概念：we treat "our" group better than outsiders我們會對『自己人』比對外人好，even when we do not notice we are doing it就算自己沒發現也一樣。It can sound a little like classroom or news English聽起來有點像課堂或新聞用語；in daily talk日常口語裡 people may just say人們可能只會說 "their little group" or "the inner circle.""他們那個小圈圈"或"核心圈子"。The feeling is那種感覺就是 "us, not you.""我們，不是你"。