So,Once they are lost in response to a toxic sound or to an antibiotic it cannot be regenerated by natural means.

一旦因噪音或抗生素遭受损失,就难以再生。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

We got lost once. We were trying to go to Spitalfields Market,

我们迷过一次路。我们想去斯毕塔菲尔德市场，

友好的英国人 - SpeakingMax英语口语达人

Actually, the truth is I sort of almost felt that once you were there, it's kind of easy to get lost there, to forget about it.

实际情况是,我觉得一旦你生活在那里，似乎很容易忘记这种冲突。

普林斯顿公开课 - 人性课程节选

I was watching a poker game once on TV and somebody who lost said, and I quote, "They beat me like an ugly stepchild" and the fate of the ugly stepchild is, in fact, not a very good fate but this is not a good study.

有一次我看电视扑克比赛，一个输的人说，我引用他的话”他们把我像丑陋的继子女一样揍了“,丑陋的继子女的命运，确实不是好命运，但这个研究也不是好研究。

耶鲁公开课 - 心理学导论课程节选