no-no

音標發(fā)音

In the classroom, failure is a no-no.
可惜在課堂里，失敗犯錯卻是個禁忌。
The most obvious no-no is the second option, and here's why: Westerners read from left to right (see Figure 3).
最為明顯的禁忌是第二種選擇，其中的原因是：西方人習慣于從左向右閱讀（參見圖 3）。
A big no-no at formal dinner is talking while eating. Make sure that you finish the food in your mouth before communicating with others.
在正式的餐會上的一大禁忌就是邊吃邊說，你在和別人交談之間一定要先把嘴里的食物咽下去。

Fabian Fernandez, a soil and plant nutrition expert at the University of Illinois, says no-till means less intensive labor.
Everyone has potentially a licenser within himself, and so there's no need - there's no logical need for a state licenser.
每個人內在都有一個控制者，所以,沒有必要有一個政府的控制者了。
耶魯公開課 - 彌爾頓課程節(jié)選
Yeah, I think that mandatory voting is a no-brainer. It's a dumb idea. It's a terrible idea.
我認為強制投票這事不用多考慮，是一個極其愚蠢，極其糟糕的想法。
對于義務投票制 - SpeakingMax英語口語達人

Its no-frills mandate--no meals, no in-flight service, no travel agents--is popular with both budget-seekers and jet-setters.
FORBES: Cheap Chic

If you say that something is a no-no, you think it is undesirable or unacceptable.