他曾经说过：“生命短暂，不要停滞不前。”

He once said, "Life is too short to get bogged down."

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美国民权领袖马丁·路德·金曾经说过：“我有一个梦想。”

American civil rights (民权) leader Martin Luther King once said, "I have a dream."

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他曾经说过这句话。

He once said this sentence.

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Voltaire went and hung out with Frederick the Great, and after a while he said, "Let me out of here."

伏尔泰曾经与腓特烈大帝来往,过了不久他便说,"我要离开"

耶鲁公开课 - 欧洲文明课程节选

So, in terms of practicing this weekend, I mentioned that instead of getting a problem-set today, what I am going to be posting is optional extra problems.

而对于这周的练习，我曾经说过今天将不会布置作业，但是会布置一些额外的习题。

麻省理工公开课 - 化学原理课程节选

He once said that if he wasn't the czar of all the Russians, what he would want to be would be an English admiral.

他曾经说过,如果他不是俄国人的沙皇,他会做个英国的海军上将

耶鲁公开课 - 欧洲文明课程节选