only once

常见例句

双语例句

• I heard him plead in court only once.
  我只有一次听到他在法庭上作辩护。
• Try only once.
  只尝试一次。
• The century plant blooms only once in its lifetime.
  龙舌兰在其一生中只开一次花。

原声例句

• After the concert he said: "She has a voice that one hears only once in a hundred years."
• There we go. Now if I do this, an infinite number of times, we should get roughly 50/50, but now we have the ability to do things only once in awhile.
  开始，如果我们，不停地按这个按钮，我们大致会有一半的机会听到猫叫，但是我们每次只有一次按按钮的机会。
  哈佛公开课 - 计算机科学课程节选
• It's a comedy that you only get once you performed and once you know what's happening, and
  这种喜剧只有你自己明白，只有你自己知道发生了什么，
  街头表演很有趣 - SpeakingMax英语口语达人

权威例句

• Only once mankind is emancipated will people act according to their true, co-operative nature.
  ECONOMIST: A Survey of the 20th Century
• If they do, they usually say that they had this experience only once or twice.
  NEWYORKER: Seeing and Believing
• Only once did Daphne drop the veil, and then only on her own terms.
  NPR: One Boy's Heroism in the Face of AIDS
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