It's a total mystery,". He says brain studies are shedding light on the pieces of the puzzle and might one day solve the mystery.

VOA: standard.2010.01.15

No mystery about what it's like to be a ball point pen.

变成圆珠笔本身并没有什么神秘的。

耶鲁公开课 - 死亡课程节选

No mystery about what it's like to be a cell phone.

作为手机也一样。

耶鲁公开课 - 死亡课程节选

They were the same people who were always trying to annex Cuba; about four times over they tried to annex Cuba, and it's still a bit of mystery how it never happened.

他们与妄图吞并古巴的是同一伙人,他们曾四次试图吞并古巴,这个阴谋最终因何没有得逞倒是个谜

耶鲁公开课 - 美国内战与重建课程节选

Since it's available only to accredited investors, you can't be advertising because everyone would see it; that's why the financing of a lot of this real estate is something of a mystery, because they can't talk openly about it.

由于DPP仅仅面向可信投资者,如果做广告的话,便人尽皆知,这就是为什么很多商业地产的金融活动,那么神秘,原因就是,人们不能公开谈论它

耶鲁公开课 - 金融市场课程节选

It's a bit of a mystery right now.

现在这仍是个未解之谜

耶鲁公开课 - 死亡课程节选

Sometimes people claim it's a mystery.

有人说死亡是神秘的。

耶鲁公开课 - 死亡课程节选

It's not a mystery at all.

但这其实并不神秘。

耶鲁公开课 - 死亡课程节选