I must have been blind not to realize the danger we were in.

当时我一定是眼瞎了，竟然没有意识到我们所处的危险。

《牛津词典》

You must not agree to do it. Don't weaken.

你们一定不能同意做这件事。别心软。

《牛津词典》

It must be worrying for you not to know where he is.

你不知道他的下落一定很着急。

《牛津词典》

At sixty degrees below zero, a man with wet feet must not fail in his first attempt to build a fire.

VOA: special.2010.05.01

He says, "I believe in the practice and philosophy of what we have agreed to call magic, in what I must call the evocation of spirits, though I do not know what they are."

他说我相信我们所称作的,关于魔法的实践和哲学，我认为那是对灵魂的召唤，尽管我并不知道它们是什么“

耶鲁公开课 - 现代诗歌课程节选

The possibilities of freedom must always, in their view, be balanced with the world as it as--not as it ought to be.

在他们看来,自由的存在可能性,必须与现实相结合,而不是理所当然的

耶鲁公开课 - 美国内战与重建课程节选

Members of the Senate, if justice is to be done, these misstatements and mischaracterizations must not be allowed to stand and must not be allowed to influence your judgment as you look at the evidence.

CNN

Janet Paraskeva, the Law Society's chief executive, welcomes the prospect of outside investment and even concedes that lawyers' precious professionalism does not mean they must pretend not to be running businesses.

ECONOMIST: Why it is so difficult to regulate lawyers and doctors

To average a still-standing record of 50 points per game, as Chamberlain did in 1961-62, and to score 100 points on a single night, a player must not only want to do it, but must, on a deeper level, need to do it.

WSJ: The Night Wilt Chamberlain Made History