Now, at this point I have to just confess, as I've confessed at other times before, the three is a claim about empirical science.

在这一点上我必须承认,像我之前承认过的那样,前提三是关于实证科学的

耶鲁公开课 - 死亡课程节选

I usually try and go for a walk at least three times a week,

我一般一周至少散步3次，

愉快的音乐庆典 - SpeakingMax英语口语达人

Well,you can just--an engineer will just sit there and isolate that second of sound and then give a "times three" command and "boom," well,look at Pavarotti hold out that note.

嗯，你可以想象，工程师会只坐在那里，分离出的第二个声音,然后给了三拍命令和砰“,好吧，看帕瓦罗蒂能拖出那个音。

耶鲁公开课 - 聆听音乐课程节选

But it's only an effective vaccine in the context where you have people who can go to the doctor's office, or to an urgent care, some kind of medical facility, three times, reliably, at a specified period of time.

但为了保证接种效果,人们必须亲自去诊疗室,或者在急诊室里,使用一些医学设施辅助接种,还需要接种三次,它只在一段时间内有效

耶鲁公开课 - 生物医学工程探索课程节选