If you follow these instructions " you will be a man my son." So that's the mode of thought he may have been in when he talked.

如果你遵循这些教诲,你将成为一个真正的人，我的孩子,所以，那也许才是他发言时所处的思维模式吧。

耶鲁公开课 - 金融市场课程节选

They had to give some of them the real vaccine and some of them a placebo vaccine in order that they could really tell if the vaccine worked; you have to have it placebo controlled.

研究者们还须给部分孩子接种真正的疫苗,给另外一些孩子接种空白疫苗,以分辨疫苗是否真的有效,所以你必须使用安慰剂作对照

耶鲁公开课 - 生物医学工程探索课程节选