But after his first ride, Wiley Post knew that flying was something he could learn to do.

VOA: special.2009.03.18

So that he knew a lot about music, but he never performed or never was active as a musician.

他对音乐很懂，但他从来没有,表演过或者成为一个积极的音乐人。

麻省理工公开课 - 电影哲学课程节选

He didn't mention the name because, I assume, he thought everyone knew this was Blanc; but Marx was falsely attributed to having made that statement.

我猜他之所以没有提及原作者是因为，他认为大家都知道这句话的出处;,但由此马克思却被误认为,是那句话的原作者。

耶鲁公开课 - 金融市场课程节选

He said no one knew why this had happened, but there was nothing that could be done.

VOA: special.2010.07.31

It must have been that they somehow knew on the issuance date that the stock price was going to go up, but he said they couldn't possibly know that in these general circumstances.

这一定是,他们在发放期权的当日就知道,股价将要上涨,但是李认为在正常情况下,他们是不可能知道的

耶鲁公开课 - 金融市场课程节选