have but one

常見例句

FIRST SOLDIER: Why? Kings have but one neck like other men.
為什么？國王也只有一個脖子，和其他人沒兩樣。
Yet all sermons have but one theme: how shall life be expressed?
然而，所有的說教卻只有一個主題：生命當如何表現？
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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.")
她已經變成劇場文人們的心肝寶貝, (" 我唯一的遺憾," 他們中的一個欣然說道, "那是我只有一套表演知識傳授給瑪麗蓮.夢露."

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.
這門課對積分,的要求并不高，但這個積分你們必須會算。
麻省理工公開課 - 熱力學與動力學課程節(jié)選
This was even longer than that. But also I would have to write this thing for one of the classes,
去年那段時間比高中的學習時間還長。而且我們還要寫一些東西，
耶魯的忙碌生活 - SpeakingMax英語口語達人

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