have but one

常见例句

FIRST SOLDIER: Why? Kings have but one neck like other men.
为什么？国王也只有一个脖子，和其他人没两样。
Yet all sermons have but one theme: how shall life be expressed?
然而，所有的说教却只有一个主题：生命当如何表现？
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She had become the darling of the theater's intellectuals. ("My only regret," wagged one of them, "is that I have but one library to give to Marilyn Monroe.")
她已经变成剧场文人们的心肝宝贝, (" 我唯一的遗憾," 他们中的一个欣然说道, "那是我只有一套表演知识传授给玛丽莲.梦露."

But they have been reported to move in other directions and as fast as one hundred seventeen kilometers an hour.
Now, we are very gentle in this course with respect to knowing integrals, but this is one you have to know.
这门课对积分,的要求并不高，但这个积分你们必须会算。
麻省理工公开课 - 热力学与动力学课程节选
This was even longer than that. But also I would have to write this thing for one of the classes,
去年那段时间比高中的学习时间还长。而且我们还要写一些东西，
耶鲁的忙碌生活 - SpeakingMax英语口语达人

Since it would be a shame if relatively trivial "privacy" concerns got in the way of useful research, I have but one word for him: Hurry.
FORBES: Magazine Article
Now that the dust has settled, I can only paraphrase Nathan Hale: I regret that I have but one HP board seat from which to resign.
NEWYORKER: The Kona Files
The Commander-in-Chief has a responsibility to appreciate that we have but one military and wartime is an especially ill-advised moment to undermine, hollow-out or otherwise assault it.
CENTERFORSECURITYPOLICY: Assault on the military