bar sb from sth/doing sth 禁止，阻止（某人做某事）
Three students were barred from using the library because they had damaged books.
三個學生被禁止去圖書館借書了，因為他們損壞過書籍。
The players are barred from drinking alcohol the night before a match.
運動員在比賽前夜喝酒是不被允許的。

prohibit sth (尤指以法令）禁止
prohibit sb (from) doing sth (尤指以法令）禁止
The policy prohibits smoking on school grounds.
政策禁止在校內吸煙。
Have you got any prohibited goods with you?
您隨身帶有違禁品嗎？
Parking is strictly prohibited between these gates.
這些大門之間嚴禁停車。

veto sth 行使否決權，禁止
The mayor has vetoed the plan to build new offices.
市長否決了建新辦公樓的計劃。
I wanted to take some time off but my boss quickly vetoed that idea.
我想休假，但是這個想法馬上就被老板否決了。

no go 不可能，不行，不允許
Drinking for me tonight is a no go, because I have to work early in the morning.
我今晚不能喝酒，明天要早起工作。
I'm afraid the trip to Shanghai is a no go; I can't get the time off work.
恐怕不能去上海了，我不能休假。

no-go area 禁區
She made it clear that her private life was a no-go area.
她明確表示了，不能談論她的私生活。