I'm sure he will stop eating too much sugar, but why couldn't you tell him this a month ago, ?" when I came all the way here?"

我肯定他不会再吃太多糖，但为什么不在一个月前告诉他，在我长途赶来的时候“

哈佛公开课 - 幸福课课程节选

I couldn't tell what you said, sorry.

我听不清你们说的是什么，不好意思。

麻省理工公开课 - 化学原理课程节选

To suggest that that couldn't be relevant evidence is like saying I can't tell you anything interesting about what's going on in the hallway right now, because after all I'm not in the hallway; I'm here in the lecture hall.

要说这些都是不相干的经验,就好比说我现在不能告诉你,走廊上发生了什么,毕竟我不在走廊上,我在教室里面

耶鲁公开课 - 死亡课程节选