Kool-Aid is an American brand of drink powder. You mix it with water and a lot of sugar, and you get a very sweet, very bright cold drink — red, purple, orange, and so on. In the US it is a children’s picnic drink, not something grown-ups order in a café. The name is a trademark, so it keeps its capital letters.

Kool-Aid Kool-Aid is an American brand of drink powder是一個美國的果汁粉品牌。You你 mix it with water and a lot of sugar把它加水和很多糖調開, and就會 get a very sweet, very bright cold drink調出一杯很甜、顏色很鮮豔的冰涼飲料——red, purple, orange, and so on紅色、紫色、橘色等等。In the US在美國, it它 is a children's picnic drink是小孩野餐時喝的飲料, not something grown-ups order in a café不是大人會在咖啡廳點的東西。The name這個名字 is a trademark是個商標, so所以 it keeps its capital letters字母一直維持大寫。

Though actually, English speakers often stretch it. “To drink the Kool-Aid” means to believe a group or a leader without asking questions. That saying comes from a real mass death in 1978, when people in a closed group were made to drink poison mixed to look like a sweet drink.

Though actually不過其實，English speakers說英語的人 often stretch it常常延伸這個字的用法。"To drink the Kool-Aid""To drink the Kool-Aid"（喝下 Kool-Aid） means to believe a group or a leader without asking questions意思是不加質疑地全盤相信某個團體或領袖。That saying這個說法 comes from a real mass death in 1978源自 1978 年一場真實發生的集體死亡事件, when people in a closed group were made to drink poison mixed to look like a sweet drink當時一個封閉團體裡的人被迫喝下偽裝成甜飲料的毒藥。

So the packet in the supermarket is innocent; the idiom is not. Students will hear both, and they are not the same mood.

So所以 the packet in the supermarket超市裡那包果汁粉 is innocent是無辜的；the idiom這個成語 is not可不是。Students學生 will hear both兩種都會聽到, and而且 they are not the same mood兩者的語氣完全不一樣。