宗教上的那份清單
這是清單本來的出處，日常的用法是從這裡借過去的。
noun · C1
In Christian teaching, one of the most serious sins — one of the small named group also called the deadly sins.
（基督教）重罪；死罪之一
核心畫面
Picture a short list of the very worst things, kept apart from all the ordinary ones. Not every wrong goes on it; the list is small, and being on it is the point. Christian teaching drew such a list, and those are the cardinal sins. Now take the same shape into an office, a kitchen or a team: one short list, everyone there knows it, and onto it costs you respect at once. No law is broken — but in that room, it is the worst thing you could do.
可以想成一份很短的清單，上面只列最嚴重的那幾件事，跟其他一般的錯誤分開放。不是每個錯都上得了這份清單，清單很短，能上…更多收起
可以想成一份很短的清單，上面只列最嚴重的那幾件事，跟其他一般的錯誤分開放。不是每個錯都上得了這份清單，清單很短，能上榜本身就是重點。基督教的說法裡就有這樣一份，上面的就是 cardinal sins。再把同一個形狀搬進辦公室、廚房或球隊：一樣是很短的一份，圈子裡的人都知道，踩上去別人對你的評價馬上掉。沒有犯法，但在那個場合，那就是最不能做的事。Two branches
圈子裡的那條線
字典把這個用法標為「延伸用法」：清單的形狀原封不動搬過來，只是改由這一行的人來決定上面寫什麼。
noun · C1
Something so bad or so stupid that in a particular job, group or activity you must never do it — not against the law, just the one thing everyone there agrees you do not do.
大忌